Key Features

• 700 lb-ft torque capacity - handles serious power from LS, big-block, and small-block builds
• Close ratio gear set (2.66, 1.78, 1.30, 1.00, 0.80, 0.63) - keeps you in the powerband through every shift
• Double overdrive design with 0.80 fifth and 0.63 sixth - lower cruising RPM and improved fuel economy
• 26-spline input shaft and 31-spline output shaft - compatible with a wide range of clutch and driveline combinations
• Triple cone synchronizers on gears 1-4, double cone on 5-6 and reverse - crisp, precise shifts at high RPM
• 4616 chromoly gears and shafts with substantially increased face widths - built to survive high-stress applications
• One-piece countershaft resists distortion under load
• Fully reversible TKO-style die-cast aluminum shifter - smooth, positive action with multiple mounting positions
• Dual speedometer pickups - accommodates both electronic and mechanical speedometers
• Built-in mid-shift provisions - relocate the shifter forward without hassle
• 85mm center distance - matches TKO positioning for proven conversion fitment
• Approximately 135 lbs dry weight - reasonable weight for a transmission this strong
• 3.65-quart fluid capacity - uses Dexron III ATF

Description

When TREMEC set out to replace the legendary T56, they didn't just update it - they engineered the Magnum from the ground up using TR-6060 architecture found in factory supercars like the C6 ZR1 Corvette and Viper ACR. The result is the strongest, smoothest-shifting 6-speed manual transmission available for the aftermarket, purpose-built for GM LS engines as well as big-block and small-block applications when paired with the correct bellhousing.

This close ratio version (TUET11009) features gear ratios optimized for high-performance street driving and road racing. The 2.66 first gear launches hard without being too aggressive, while the tightly-spaced 1.78 second, 1.30 third, and 1:1 fourth keep you in the meat of your powerband. The double overdrive - 0.80 fifth and 0.63 sixth - drops highway RPM dramatically, improving both cruising comfort and fuel economy. The 4616 chromoly gears feature two-piece laser-beam welded construction with increased face widths for greater strength and more precise tooth geometry.

Inside, the Magnum benefits from modern OEM synchronizer technology: triple cone units on gears 1-4 and double cone on 5-6 and reverse deliver incredibly short, low-effort shift throws with precise engagement even at high RPM. The redesigned shift forks eliminate the wear issues that plagued earlier T56 designs, and the extensively modified case prevents leaks under high-stress conditions. The fully reversible TKO-style aluminum shifter provides multiple mounting positions, and built-in mid-shift provisions under the inspection cover make forward shifter relocation simple for bench-seat classics.

Compatible with GM big-block, small-block, and LS engines using the appropriate bellhousing. Uses standard T56 bellhousing bolt pattern with internal CSC (concentric slave cylinder) mounting provisions. Requires Dexron III ATF. Rated to 7,800 RPM.

Kit Includes

• TREMEC T56 Magnum 6-speed transmission assembly (TUET11009)
• Fully reversible die-cast aluminum shifter with reverse lockout
• Dual speedometer pickup provisions (electronic and mechanical)
• 7-tooth internal speedometer drive gear
• TREMEC factory warranty
• MDL extended warranty - additional year with 1-year grace period when purchased as part of a complete conversion package
• Lifetime technical support from MDL

Key Features

• 700 lb-ft torque capacity - handles serious power from LS swaps and big-block builds
• Wide ratio gear set (2.97, 2.10, 1.46, 1.00, 0.74, 0.50) - aggressive first gear for hard launches, double overdrive for highway cruising
• 26-spline input shaft, 31-spline output shaft - direct compatibility with GM LS-series engines
• 4616 chromoly gears and shafts - significantly increased face widths with 2-piece laser-beam welded construction
• Triple-cone synchronizers (1st-4th) - smooth, high-rpm shifts without balking
• Double-cone synchronizers (5th-6th and Reverse) - crisp engagement across all gears
• Fully reversible TKX-style die-cast aluminum shifter - OEM-grade construction with multiple mounting positions
• Dual speedometer outputs - accommodates both mechanical and electronic speedometers
• Built-in mid-shift provisions - accessible under inspection cover for easy conversions
• One-piece countershaft - bolstered design resists distortion under load
• 34.85" overall length (GM version) - plan your tunnel modifications accordingly
• 135 lbs dry weight - manageable for a transmission rated at 700 lb-ft
• 3.66 qt fluid capacity - uses ATF Dexron III, TREMEC HP-MTF, or Synchromesh

Description

The original T56 topped out around 450 lb-ft - fine for stock applications, but a liability once you started adding power. The TREMEC T56 Magnum solves that problem decisively, delivering 700 lb-ft of torque capacity in a purpose-built aftermarket package based on the TR-6060 architecture found in factory supercars like the Corvette ZR1 and Dodge Viper ACR.

This wide-ratio version (TUET11012) features a 2.97 first gear for aggressive launches and street-light acceleration, while the double overdrive - 0.74 in fifth and 0.50 in sixth - drops highway RPM significantly for better fuel economy and reduced engine wear. TREMEC widened the gear faces substantially over the original T56, then added 2-piece laser-beam welded construction for precise control of tooth angles, pitch, and alignment. Triple-cone synchronizers on gears 1-4 and double-cone on 5-6 deliver smooth, high-rpm shifts without grinding or balking - even when you're banging through the gears hard.

The reversible die-cast aluminum shifter eliminates the limitations of earlier cast-iron designs, providing TKX-style precision with short, low-effort throws. Dual speedometer pickups handle both mechanical cable-driven and electronic setups without adapters. Built-in provisions for mid-shift conversions sit under the inspection cover, ready when your application demands a different shifter location. The T56-style bellhousing bolt pattern makes installation with various late-model GM engines straightforward.

At 34.85 inches overall length, tunnel modification is required for most classic muscle car conversions - this is not a drop-in for '98-'02 F-bodies or '04-'06 GTOs. The 26-spline input matches LS-series engines directly, while the 31-spline output handles serious driveline torque. When you purchase through MDL, you get the standard TREMEC warranty plus an additional year of coverage, along with lifetime technical support to help you get your conversion dialed in right.

What's Included

• TREMEC T56 Magnum transmission assembly (TUET11012)
• Die-cast aluminum reversible shifter with mounting hardware
• Dual speedometer output provisions (mechanical and 17-tooth electronic)
• Internal hydraulic throwout bearing mounting provisions
• Inspection cover with mid-shift conversion access
• TREMEC factory 1-year warranty plus MDL extended warranty (additional 1 year with 1-year grace period)
• Lifetime technical support from MDL

Key Features

• 700 lb-ft torque capacity - built to handle high-power GM small block, big block, and LS engine combinations
• Wide-ratio gear set: 2.97, 2.10, 1.46, 1.00, 0.80, 0.63 - aggressive 2.97:1 first for hard launches with double overdrive for relaxed highway cruising
• Triple-cone synchronizers on gears 1-4, double-cone on 5-6 and reverse - precise, high-rpm shifting under load
• 26-spline input shaft, 31-spline output shaft - robust spline counts for serious torque handling
• 85mm center distance with substantially increased gear face widths - wider gears and laser-beam welded 2-piece construction for durability
• Fully reversible TKO-style OEM-grade die-cast aluminum shifter - smooth, positive shift action with multiple mounting positions
• Dual speedometer pickups - accommodates both electric and mechanical speedometers
• Built-in mid-shift provisions under inspection cover - simple forward shifter relocation for early cars with bench seats
• 135 lbs dry weight - lighter than competing 6-speeds
• 3.66 quart fluid capacity - uses Dexron III ATF or TREMEC HP-MTF
• Overall length: 34.85 inches (GM version)

Description

The TREMEC T-56 Magnum eliminates the compromise between strength and driveability that plagued earlier 6-speed conversions. Introduced in 2009 as the long-awaited replacement for the original T-56, the Magnum combined the best of TREMEC's OEM TR-6060 design with the most popular features of their TKO 5-speed. Known in OEM form as the TR-6060, this is the same transmission architecture found in factory supercars including the Dodge Challenger and Viper, and the Chevrolet Camaro - now available for your GM-powered build.

The TUET16885 wide-ratio gear set delivers a 2.97:1 first gear for aggressive launches paired with closely-spaced 5th (0.80:1) and 6th (0.63:1) overdrives for comfortable highway cruising at lower RPMs. This ratio spread makes the wide-ratio Magnum ideal for street machines, restomods, and pro-tourers where you want strong off-the-line acceleration without screaming RPMs at 70 mph.

Engineering improvements over the original T-56 are substantial. Gear face widths have been significantly increased, and 2-piece laser-beam welded gear construction allows greater control of tooth angles, pitch, and alignment. The bolstered one-piece countershaft resists distortion, while redesigned shift forks with permanently mounted shift links eliminate the wear and float that caused incomplete shifts in earlier designs. Spring-loaded ball-type inserts replace the stamped-steel shift keys of previous generations, delivering short, smooth shifts without the notchy feel.

The Magnum works with GM small block, big block, and LS engines when paired with the correct bellhousing. Clutch release provisions are modeled after the T-56 in 1998-2002 Camaros and Firebirds, designed for use with hydraulic throwout bearings. Multiple shift stub relocation kits are available for use with factory 4-speed consoles. When you purchase from MDL, you get our extended warranty coverage plus lifetime technical support from drivetrain experts who actually use these parts.

What's Included

• TREMEC T-56 Magnum 6-speed transmission (TUET16885)
• OEM-grade die-cast aluminum reversible shifter assembly
• Dual speedometer pickup provisions (electric and mechanical)
• Built-in reverse light switch
• Built-in reverse lockout
• MDL extended warranty - 1 additional year beyond manufacturer warranty with 1-year grace period
• Lifetime technical support

Key Features

• Genuine TREMEC aluminum bellhousing (GM #12453263 / TREMEC #1386-212-005)
• Factory OE replacement for 1998-2002 Chevrolet Camaro and Pontiac Firebird with T56
• Also fits 2004-2006 Pontiac GTO with LS1/LS2 and T56 transmission
• Compatible with GM T56 and T56 Magnum transmissions
• Lightweight aluminum construction - approximately 8.1 lbs
• Gen V LT engine compatible (note: top bolt will not attach)
• Direct bolt-on replacement - no modifications required

Description

When your F-Body or GTO T56 build needs a bellhousing you can trust, don't settle for cheap knockoffs. This is the genuine TREMEC aluminum bellhousing - the same unit that came factory-installed on LS1-powered 1998-2002 Camaro and Firebird models, as well as the 2004-2006 Pontiac GTO. Factory machining ensures proper transmission alignment, starter positioning, and clutch clearance for a direct bolt-on installation with no modifications required.

Cast from lightweight aluminum at approximately 8.1 lbs, this bellhousing delivers the perfect interface between your LS engine and T56 transmission. It fits all GM T56 transmissions from F-Body and GTO applications, plus the aftermarket T56 Magnum. Whether you're restoring an F-Body to stock condition, building an LS swap, or upgrading to a Magnum, this is the bellhousing that thousands of LS/T56 combinations have depended on for reliable, factory-spec performance.

This bellhousing also fits Gen V LT engines, though note that the top bolt location will not be utilized in LT applications. Cross-referenced as GM part number 12453263 and TREMEC 1386-212-005 (also 92142856). When you need OE engineering with a proven track record, accept no substitutes.

What's Included

• TREMEC aluminum T56 bellhousing (GM #12453263 / TREMEC #1386-212-005)
• Mounting hardware
• Installation instructions

Key Features

• SFI 6.1 certified - required by sanctioning bodies for cars running 11.49 or faster in the quarter-mile
• Spun steel cone construction - not rolled or stamped - delivers maximum dimensional stability and accuracy
• Work-hardens to over 80,000 PSI strength - over twice the strength of other steel bellhousings
• Universal fit design - non-vehicle-specific for custom builds and LS/LT swaps
• Designed for hydraulic throwout bearing operation
• Fits up to 168-tooth flywheel and 11-inch clutch
• Bellhousing height: 5.555 inches
• Weight: 20 pounds
• Semi-gloss black powder coat finish
• Uses OEM-style starter placement
• Made in the USA

Description

Running 11.49s or quicker demands SFI-certified protection between your engine and transmission. The QuickTime RM-8020 delivers race-grade safety and precision for high-horsepower LS and LT builds, connecting Gen 3 and Gen 4 LS engines plus Late Model LT1/LT4 (2014-current) powerplants to T56 Chevy LS and T56 Magnum 6-speed transmissions.

QuickTime's proprietary spin-forming process sets this bellhousing apart from competitors using rolled or stamped steel. The spun cone construction creates the most dimensionally stable bellhousing available, with pinpoint concentricity and parallelism that keeps your engine and transmission in perfect alignment through the entire RPM range. This precision eliminates the bellhousing flex that accelerates drivetrain wear in high-stress applications.

Built from high-grade steel that work-hardens to over 80,000 PSI, the RM-8020 delivers more than twice the strength of other steel bellhousings while maintaining a lightweight 20-pound design. The semi-gloss black powder coat finish provides long-term corrosion resistance. MIG-welded thread inserts for transmission mounting ensure professional-grade durability.

This universal-fit bellhousing accommodates up to a 168-tooth flywheel and 11-inch clutch, with design optimized for hydraulic throwout bearing systems. OEM-style starter placement simplifies installation. Patent-pending on 16 points of bellhousing design and manufacturing process. Note: Transmission mounting bolts not included. Made in the USA.

What's Included

• QuickTime RM-8020 steel bellhousing with semi-gloss black powder coat finish
• Full engine block plate
• Grade 8 mounting hardware
• Installation instructions

Key Features

• Application-specific hardware for T56 Magnum to aluminum bellhousing mounting
• M10x1.5 thread pitch bolts sized specifically for aluminum bellhousing thickness
• Bolt lengths differ from steel bellhousing kits to ensure proper thread engagement
• Designed for GM Magnum (GM/Viper version) T56 transmissions
• Eliminates the guesswork of sourcing correct fasteners for your LS swap

Description

When bolting a T56 Magnum to an aluminum bellhousing in your LS-powered build, generic hardware or bolts pulled from a steel bellhousing setup won't cut it. Aluminum bellhousings have different material thickness and thread engagement requirements than their steel counterparts, which means you need fasteners specifically sized for the application. Using the wrong length bolts can result in insufficient thread engagement or, worse, bottoming out before achieving proper clamping force.

This hardware kit provides the correct M10x1.5 bolts engineered specifically for aluminum bellhousing installations. The bolt lengths account for the aluminum bellhousing's material thickness, delivering proper thread engagement into the T56 Magnum's transmission case. This ensures a secure, reliable connection between your bellhousing and transmission without the risk of stripped threads or loose fasteners.

Designed for use with GM Magnum (GM/Viper version) T56 transmissions and compatible aluminum bellhousings in Chevy LS applications. Whether you're building an F-body restomod, an LS swap project, or a custom performance build, this kit gives you the exact hardware you need for a proper installation.

Kit Includes

• M10x1.5 transmission-to-bellhousing bolts (aluminum bellhousing specific length)
• transmission to bellhousing bolts, transmission mount hardware, speedo cable hardware, Bellhousing block plate bolts
• Complete hardware for bellhousing-to-transmission connection

Key Features

• Complete bolt set for mounting Chevy LS steel bellhousing to engine and T56 Magnum transmission
• 26 total fasteners including 10mm hex flange bolts and Grade 8 hardware
• Black finish on primary 10mm mounting bolts for corrosion resistance
• Grade 8 7/16-14 x 1 inch UNC bolts for high-stress mounting points
• Includes all necessary lock washers in 7/16-inch sizing
• Designed specifically for steel bellhousing applications - aluminum bellhousings require different hardware

Description

Sourcing the correct hardware for a T56 Magnum installation can derail an otherwise straightforward build. Different bolt lengths, thread pitches, and grades are required at various mounting points throughout the bellhousing assembly, and mixing up specifications leads to stripped threads, improper clamping force, or worse. This hardware kit eliminates the guesswork by providing every fastener needed to properly mount your steel bellhousing to an LS engine block and bolt the T56 Magnum transmission to the bellhousing.

The kit includes eight 10mm-1.5 x 50mm hex flange bolts with black finish for the primary bellhousing-to-engine connection, along with eight 10mm-1.5 x 40mm black hex flange bolts for transmission-to-bellhousing mounting. Two shorter 10mm-1.5 x 30mm hex flange bolts handle secondary mounting locations. For high-stress connection points, two Grade 8 7/16-14 x 1 inch UNC hex bolts deliver the strength needed to handle drivetrain loads without stretching or backing out.

Two Grade 5 6mm-1.0 x 16mm hex bolts round out the fastener selection for accessory mounting points. Lock washers in 7/16-inch sizing are included to prevent loosening under vibration. Each fastener is sized and graded for its specific location in the assembly - the right hardware in the right place every time.

This kit is designed specifically for steel bellhousing installations. Aluminum bellhousings use different bolt lengths due to material thickness differences. Compatible with Chevrolet LS engines paired with TREMEC T56 Magnum transmissions.

What's Included

• (8) 10mm-1.5 x 50mm hex flange bolts, black finish
• (8) 10mm-1.5 x 40mm hex flange bolts, black finish
• (2) 10mm-1.5 x 30mm hex flange bolts
• (2) 6mm-1.0 x 16mm hex bolts, Grade 5
• (2) 7/16-14 x 1 inch UNC hex bolts, Grade 8
• (2) 7/16-inch lock washers
• (1) Bolt, 1/4"-20 thread
• (2) Lock washers

Key Features

• 24-pound lightweight billet steel construction - precision-machined from solid billet for strength without excess rotating mass
• Dual pressure plate mounting patterns - accepts both 12-5/8" clutches with dowel pins and 10mm bolts, plus 12-5/8" pattern with 3/8" shouldered bolts
• 168-tooth ring gear for reliable starter engagement
• 2.485" crank registration size for precise centering on 6-bolt LS cranks
• Zero (neutral) balance for internally balanced LS applications
• 11mm x 1.5mm crank bolt pattern
• Compatible with 11" single-disc clutch assemblies
• Made in the USA

Description

When your LS swap demands a flywheel that delivers billet steel strength with reduced rotating mass, this lightweight flywheel solves the problem. Precision-machined from a solid piece of billet steel and lightened to just 24 pounds, it matches OE cast flywheel weight while providing superior strength and durability over factory cast units. The lightened design reduces rotational inertia for improved throttle response and quicker acceleration without sacrificing the smooth engagement characteristics needed for street driving.

The dual pressure plate mounting pattern design eliminates compatibility guesswork. It accepts both the LS-style 11" clutches using dowel pins with 10mm pressure plate bolts, as well as GM 11" clutches using shouldered 3/8" pressure plate bolts. The 2.485" crank registration ensures perfect centering on LS1, LS2, LS3, LS6, and LS7 engines equipped with 6-bolt crankshafts. Zero balance construction makes it the correct choice for these internally balanced LS applications.

CNC-machined in the USA from solid billet steel, each flywheel undergoes precision finishing for optimal surface quality and dimensional accuracy. The 168-tooth ring gear provides reliable starter engagement with standard LS starters. Whether you're completing a classic car LS swap or upgrading a late-model manual transmission vehicle, this flywheel delivers the billet steel strength you need at a weight that won't bog down your build.

What's Included

• Lightweight billet steel flywheel (24 lbs)
• 168-tooth ring gear (pre-installed)
• Dual pressure plate bolt patterns (12-5/8" with dowels/10mm bolts and 12-5/8" with 3/8" bolts)
• 2.485" crank registration bore
• Zero balance configuration

Note: Flywheel bolts sold separately. It is never recommended to reuse flywheel bolts when installing a new or used flywheel.

Key Features

• 24 lb lightened billet steel construction - reduces rotational mass for improved throttle response while retaining steel's durability
• Dual clutch bolt pattern - accepts both 11" (with EQ pins) and 12-5/8" pressure plates for maximum clutch selection flexibility
• Zero balance configuration - matches internally balanced GM LSA, LSX, and Gen V LT engines
• 168-tooth ring gear - ensures reliable starter engagement
• 8-bolt crankshaft mounting with 11mm x 1.5mm bolt holes
• Pressure plate bolt threads: 3/8" and 10mm for broad compatibility
• Made in the USA

Description

This lightened billet steel flywheel bridges the gap between heavy OEM dual-mass units and ultra-light aluminum flywheels that can sacrifice low-speed drivability. At 24 lbs, it sheds significant rotational mass compared to stock castings, delivering noticeably quicker throttle response and faster revs without the chatter or aggressive engagement characteristics common to featherweight aluminum designs. Steel's inherent density provides better harmonic dampening than aluminum, helping absorb the vibrations common in high-output LS and LT builds while smoothing out drivetrain noise.

Machined from billet steel rather than cast, this flywheel offers superior strength and consistency over traditional OEM-style castings. The CNC-machined friction surface provides a flat, true mating surface for consistent clutch engagement. Whether you're building a street/strip LSA, an LSX crate engine swap, or a Gen V LT1/LT4 project, the robust construction handles the torque without concern.

The dual bolt pattern design accommodates both 11" pressure plates (with equalizer pins) and 12-5/8" pressure plates, giving you flexibility to run anything from a mild street clutch to an aggressive multi-disc setup. With both 3/8" and 10mm pressure plate bolt threads, compatibility extends across most popular GM and aftermarket clutch kits. The zero-balance configuration matches the internal balance of LSA, LSX, and Gen V LT engines - no external weights required.

Designed for GM's modern performance V8s including LSA supercharged applications, LSX crate motors, and Gen V LT1/LT4 engines with 8-bolt crankshafts. Compatible with both hydraulic and mechanical clutch release systems. Made in the USA with precision CNC machining for reliable performance across street, strip, and road course duty.

What's Included

• Lightened billet steel flywheel (24 lbs)
• 168-tooth ring gear (installed)
• Dual clutch bolt pattern (11" EQ pins and 12-5/8")

Key Features

• Lightened billet steel construction - 24 lbs for quicker throttle response while retaining rotational inertia for solid launches
• Dual clutch pattern compatibility - accepts both LS pressure plate and 12-5/8" pressure plates for maximum clutch flexibility
• LS9-specific 9-bolt crankshaft flange mounting - direct fit for GM's supercharged 6.2L engines
• Zero balance design - precision balanced for smooth, vibration-free operation
• 168-tooth integrated ring gear - reliable starter engagement
• Single-disc configuration - compatible with 11" clutch disc diameter
• 11mm x 1.5mm flywheel bolt pattern - uses standard LS9 hardware
• Made in the USA

Description

GM's supercharged LS9 features a unique 9-bolt crankshaft flange that demands a purpose-built flywheel. This lightened billet steel flywheel delivers the strength required for high-torque supercharged applications while shedding unnecessary mass for improved throttle response. At 24 pounds, it strikes the right balance between quick engine acceleration and the rotational inertia needed for consistent power delivery off the line.

Billet steel construction provides superior strength over cast alternatives, handling the increased forces generated by forced-induction engines without the stress points and potential cracking found in lesser materials. The precision-machined clutch surface ensures flat, true contact with your pressure plate for consistent engagement and extended clutch life.

The dual clutch pattern accommodates both 11" and 12-5/8" pressure plate configurations, giving you flexibility for your current clutch setup and future upgrades. Whether you're running an OE-style 11" pressure plate with equidistant pins or stepping up to a larger 12-5/8" unit, this flywheel has you covered. The zero balance design matches the LS9's internally balanced rotating assembly for smooth operation throughout the RPM range.

Direct fit for 2009-2013 Corvette ZR1 applications and LS9 crate engine builds. The integrated 168-tooth ring gear ensures reliable starter engagement. Proudly made in the USA with lifetime technical support from MDL.

What's Included

• Lightened billet steel flywheel - 24 lbs, zero balance
• 168-tooth integrated ring gear
• Precision-machined clutch surface for 11" disc
• 9-bolt crankshaft mounting pattern (11mm x 1.5mm)
• Dual pressure plate bolt pattern (11" EQ pins and 12-5/8" EQ)
• Lifetime technical support

Key Features

• M11 x 1.5 thread pitch — OEM specification for all GM LS crankshaft applications
• Hex head design for positive wrench engagement during installation and removal
• Complete set of 6 bolts for full flywheel mounting
• Direct fit for LS1, LS2, LS3, LS6, LS7, and L92 series engines
• Follow GM three-stage torque procedure: 15 ft-lbs > 37 ft-lbs > 74 ft-lbs for proper bolt loading

Description

The flywheel-to-crankshaft connection is one of the most critical fastener applications in your drivetrain. LS engines — with their cross-plane crankshaft design — generate significant vibrations and torque pulses that place heavy demands on flywheel hardware. Using the correct fasteners with proper torque specs prevents bolts from backing out, which can destroy the clutch assembly, rod bearings, and transmission bearings.

This hex head flywheel bolt kit is built to M11 x 1.5 specification for direct compatibility with GM Gen III and Gen IV LS crankshafts. The hex head design provides reliable wrench engagement, reducing the risk of rounded fasteners during high-torque installation. These bolts deliver the clamping force your LS engine demands whether you're completing an LS swap, a rebuild, or replacing worn factory hardware.

Compatible with LS1, LS2, LS3, LS6, LS7, and L92 series engines. Always use new flywheel bolts when installing a flywheel — reusing stretched or fatigued hardware on this critical connection invites failure. Follow GM's recommended three-stage torque sequence: first pass at 15 ft-lbs, second pass at 37 ft-lbs, and final torque at 74 ft-lbs in a star pattern for even clamping.

What's Included

• 6 hex head flywheel bolts (M11 x 1.5 thread pitch)
• Manufacturer's warranty against defects

GM LS Flywheel Bolt Kit | LS1, LS2, LS3, LS6, LS7, L92 Engines | Set of 8

Key Features

• Complete 8-bolt set for GM LS-series and L92 engines
• M11 x 1.5 thread pitch - OEM specification for LS crankshafts
• Hex head design for standard socket tools
• Direct replacement for worn, damaged, or missing factory hardware
• Engineered for proper clamping force and vibration resistance

Description

Loose or worn flywheel bolts are a ticking time bomb in any LS build. When flywheel hardware backs out, the resulting damage cascades through the drivetrain - destroying clutch assemblies, damaging rod bearings, and taking out transmission bearings. This flywheel bolt kit delivers the OEM-spec hardware your LS engine demands for secure flywheel mounting.

Each bolt features an M11 x 1.5 thread pitch matched to GM LS crankshaft specifications. The hex head design works with standard sockets for straightforward installation - no specialty tools required. LS engines are notorious for the significant vibration generated by their cross-plane crankshafts, and with displacements reaching 7.0 liters in some variants, proper flywheel mounting hardware is critical to drivetrain longevity.

Compatible with LS1, LS2, LS3, LS6, LS7, and L92 Series engines. Follow the GM-recommended three-pass torque sequence: 15 lb-ft on the first pass, 37 lb-ft on the second pass, and 74 lb-ft final torque. This staged approach ensures even compression across the flywheel face. GM recommends applying blue thread locker to each bolt when using this torque pattern to prevent loosening under the extreme rotational forces these bolts endure.

Kit Includes

• (8) Flywheel bolts with hex heads
• M11 x 1.5 thread pitch specification
• Manufacturer's warranty against defects

Flywheel Bolt Kit | GM LS9 9-Bolt Crankshaft | Set of 9

Key Features

• Complete nine-bolt set specifically designed for LS9 crankshaft flange pattern
• M11-1.5 x 23.5mm thread specification matching OEM dimensions
• Torque sequence: 15 lb-ft > 37 lb-ft > 74 lb-ft (three-pass)
• Eliminates sourcing hassle for the LS9's unique 9-bolt configuration
• Backed by manufacturer's warranty against defects

Description

The LS9's supercharged 6.2L V8 didn't just get more horsepower than its LS siblings--it got a completely different flywheel bolt pattern. While standard LS engines use a 6-bolt crankshaft flange and newer LSA/LT variants moved to 8 bolts, the LS9 stands alone with its 9-bolt configuration. This kit delivers all nine bolts you need to properly secure your flywheel to that unique crankshaft flange.

Each bolt features M11-1.5 threading with 23.5mm length, matching GM's factory specifications exactly. Proper installation requires a three-pass torque sequence: first tighten all bolts to 15 lb-ft, then 37 lb-ft, and finally 74 lb-ft in a crisscross pattern. This graduated approach ensures even clamping force distribution across the flywheel face, preventing the distortion and bolt loosening that plague improperly torqued assemblies. Incorrect flywheel bolt torque on high-output LS engines can cause bolts to back out, destroying the clutch assembly and eventually damaging rod bearings and transmission components.

Whether you're building a Corvette ZR1 restoration, dropping an LS9 crate engine into a swap project, or refreshing an existing clutch setup, this complete nine-piece kit ensures you have the correct hardware on hand. No more hunting for individual bolts or questioning whether you have the right count for that distinctive 9-bolt pattern.

What's Included

• Nine M11-1.5 x 23.5mm flywheel bolts
• Manufacturer's warranty against defects

Key Features

• 8740 chromoly steel construction - aerospace-grade alloy forged for maximum strength
• Pro Series 200,000 psi tensile strength rating - far superior to OEM hardware
• 12-point head design with 1/2-inch socket compatibility - superior grip and reduced rounding risk
• 0.880-inch under-head length (UHL) - optimized for LS Series crankshaft specifications
• M11 x 1.50 thread pitch - direct OEM fitment for all LS applications
• Black oxide finish - corrosion resistance with clean appearance
• Heat-treated before thread rolling - increased fatigue resistance and dimensional accuracy
• Larger-than-stock shank diameter - improved flywheel register and clamping force
• Complete 6-bolt set - everything needed for one LS engine

Description

Factory flywheel bolts are a weak link in high-performance LS builds. OEM hardware simply is not engineered to handle the stress of aggressive clutch dumps, high-RPM shifts, or sustained track use. ARP's Pro Series Flywheel Bolt Kit delivers the strength upgrade serious LS builders demand, replacing marginal factory fasteners with aerospace-grade hardware rated at 200,000 psi tensile strength.

Each bolt is forged from 8740 chromoly steel - a nickel-chromium-molybdenum alloy prized for its exceptional balance of tensile strength, toughness, and fatigue resistance. ARP heat-treats the material before thread rolling and machining, a critical sequence that maximizes thread integrity and dimensional accuracy. The exclusive flat 12-point head design accepts a standard 1/2-inch socket and provides superior engagement compared to hex heads, reducing the risk of rounding under high torque loads.

The larger-than-stock shank diameter does more than just add strength - it improves flywheel register by filling more of the mounting hole, reducing the chance of flywheel movement under load. The 0.880-inch under-head length is engineered specifically for LS Series crankshafts, ensuring proper thread engagement without bottoming out. Black oxide finish provides corrosion protection while maintaining the professional appearance serious builders expect.

Compatible with LS1, LS2, LS3, LS6, LS7, and L92 series engines. Complete 6-bolt set includes everything needed to secure your flywheel with confidence.

Kit Includes

• Six (6) 8740 chromoly flywheel bolts with black oxide finish
• Manufacturer's warranty against defects
• MDL lifetime technical support

Key Features

• Steel-backed organic facings deliver smooth engagement with enhanced burst strength for street performance
• Diaphragm pressure plate with LS bolt pattern for hydraulic actuation
• 26-spline x 1-1/8" sprung hub matches T56 Magnum and Magnum-F input shaft specifications
• 350 ft-lb torque rating sized for performance street applications
• Hand-assembled in-house with double-checked accuracy for ready-to-install quality
• 1-year free-from-defect warranty
• Made in the USA by MDL

Description

Finding the right clutch for a GM LS to T56 swap shouldn't mean compromising on quality or pedal feel. This Superior Series clutch set delivers exactly what a street performance build demands: reliable holding power, smooth engagement, and the correct spline count to mate your LS engine to a T56 Magnum or Magnum-F transmission without adapter headaches.

The steel-backed organic design strikes the ideal balance between daily drivability and durability. Steel backing increases clamping force and provides superior burst strength compared to standard organic discs, while the organic friction material ensures civilized takeoffs and excellent pedal modulation. The diaphragm pressure plate features the correct LS bolt pattern and is configured for hydraulic release systems, eliminating the fitment problems common with mechanical linkage conversions.

Every MDL Superior clutch is hand-assembled in-house to ensure quality and flawless operation. Each unit is checked and double-checked for proper balance, precise tolerances, and reliable function before it ships. This process guarantees a ready-to-install component right out of the box. Note that a throwout bearing is not included with this kit and must be purchased separately based on your specific bellhousing and slave cylinder configuration.

Compatible with GM LS engines paired to T56 Magnum and Magnum-F transmissions using the 26-spline input shaft. Made in the USA and backed by MDL's 1-year free-from-defect warranty and lifetime technical support.

What's Included

• Diaphragm pressure plate with LS bolt pattern
• 11" clutch disc with steel-backed organic facings and 26-spline x 1-1/8" sprung hub
• Pilot bearing
• Clutch alignment tool
• Pressure plate bolts (3/8")
• Installation and break-in instructions
• Lifetime technical support from MDL

Key Features

• Dual-friction disc: Kevlar facing on flywheel side, steel-backed organic facing on pressure plate side
• 26-spline x 1-1/8" hub for GM LS engines mated to T56 or T56 Magnum transmissions
• Diaphragm-style pressure plate designed for hydraulic actuation
• Sprung hub disc for smooth engagement and reduced drivetrain shock
• Hand-built Superior clutch disc manufactured in-house with double-checked tolerances
• 500 lb-ft torque capacity—Performance Street Plus rated
• Made in the USA with 1-year defect-free warranty and lifetime tech support

Description

Extracting maximum performance from a high-torque LS engine requires a clutch that bridges the gap between aggressive track bite and civilized street manners. This dual-friction Superior clutch disc solves that challenge by pairing Kevlar on the flywheel side with a steel-backed organic facing on the pressure plate side. The result is a clutch that hooks hard under load yet remains smooth and predictable in stop-and-go traffic.

Why the hybrid configuration? Kevlar's coefficient of friction actually increases with temperature—meaning torque capacity goes up, not down, under hard use. It also resists burning and delivers exceptional longevity. Meanwhile, the steel-backed organic side provides the smooth modulation and forgiving engagement drivers expect on the street. This combination delivers more grip than a pure organic disc while maintaining better driveability than an all-Kevlar setup—the sweet spot for street performance and weekend track duty.

Every Superior clutch disc is hand-built in MDL's Caldwell, Idaho facility. Each disc goes through rigorous quality control—checked and double-checked for tolerances—before it ships. The 11" diaphragm pressure plate provides high clamping force without excessive pedal effort, and the sprung hub dampens engagement shock for chatter-free operation. Rated at 500 lb-ft, this kit is sized right for naturally aspirated and moderately boosted LS builds.

Fits GM LS engines paired with T56 or T56 Magnum transmissions using a 26-spline, 1-1/8" input shaft. Designed exclusively for hydraulic clutch actuation systems. Note: No throwout bearing or pilot bearing included—order separately based on your bellhousing and crankshaft configuration. Made in the USA with MDL's 1-year defect-free warranty and lifetime technical support.

What's Included

• 11" diaphragm pressure plate (LS bolt pattern)
• Superior clutch disc with Kevlar/steel-backed organic dual-friction facings
• Sprung hub design (26-spline x 1-1/8")
• 3/8" pressure plate bolts
• Clutch alignment tool
• Lifetime technical support

Note: No throwout bearing or pilot bearing included with this kit.

Superior 11" Kevlar Clutch Set | GM LS | 26-Spline T56/TKX

Key Features

• 550 lb-ft torque capacity for high-performance LS builds
• Kevlar/Kevlar friction surfaces deliver smooth engagement with superior heat tolerance
• 26-spline x 1-1/8" hub fits T56, Magnum, TR-6060, TKO and TKX transmissions
• Sprung hub design dampens drivetrain shock for improved drivability
• Diaphragm pressure plate with 12-5/8" equal bolt pattern
• Hand-assembled in-house with rigorous quality inspection before shipping
• Engineered for performance street driving and open track applications
• Made in the USA

Description

High-performance LS builds demand clutch systems that can handle serious power while maintaining streetability. The MDL Superior 11" Kevlar clutch set delivers exactly that balance—rated at 550 lb-ft of torque capacity with dual Kevlar friction surfaces that actually increase grip under hard use rather than fading like organic compounds. When heat builds during aggressive driving, Kevlar's coefficient of friction rises, giving you more holding power precisely when you need it most.

Unlike organic materials that lose torque capacity at elevated temperatures and can burn when slipped excessively, Kevlar resists wear significantly better and won't sustain permanent heat damage under demanding conditions. The sprung hub design absorbs drivetrain shock loads, delivering smooth engagement without the chatter common to solid-hub racing clutches. This combination makes the Superior series ideal for vehicles that split time between spirited street driving and open track days.

The diaphragm-style pressure plate provides progressive pedal feel with clamping force that actually increases over the life of the clutch—delivering lower pedal effort than Long-style pressure plates while maintaining consistent performance. The 12-5/8" equal bolt pattern matches standard GM LS flywheel configurations, and the 26-spline x 1-1/8" hub provides direct compatibility with T56 and T5 transmissions.

Every Superior clutch set is hand-assembled in MDL's facility, where each assembly undergoes rigorous inspection to ensure exacting tolerances and flawless operation before it ships. You receive a ready-to-install, precision-balanced clutch set backed by a 1-year free-from-defect warranty.

What's Included

• Diaphragm pressure plate with 12-5/8" equal bolt pattern
• 11" Kevlar/Kevlar clutch disc with 26-spline x 1-1/8" sprung hub
• Pilot bearing
• Clutch alignment tool
• Pressure plate bolt set
• Installation and break-in instructions
• 1-year free-from-defect warranty

Key Features

• 800hp torque capacity for serious street builds
• Twin organic friction discs (9.687" diameter) for smooth engagement
• 26-spline x 1-1/8" input shaft compatibility
• Universal fitment: GM V8 ('55-'85), BOP ('59-'79), Ford 11"/11.5"/12" Long patterns
• Sprung hub design absorbs driveline shock while maintaining engagement control
• Large red adapter ring (6911/6921 series) fits 168T GM, Ford 164T/176T/180T/184T, BOP 160T/166T flywheels
• Soft pedal effort with excellent release characteristics
• Diaphragm-style pressure plate for consistent clamp load

Description

The McLeod RST twin disc clutch delivers 800hp holding power in a street-friendly package--no harsh engagement, no leg-day pedal effort, no excuses. It's engineered for the enthusiast running serious power who still wants to daily-drive their build without fighting the clutch in traffic.

The twin organic friction discs provide the clamping force of a multi-disc setup while maintaining the smooth, progressive engagement characteristics you expect from a streetable clutch. Sprung hubs absorb driveline shock during aggressive launches, protecting the transmission input shaft while delivering precise pedal modulation. The diaphragm pressure plate maintains consistent clamp load across the RPM range with a lighter pedal feel than Borg & Beck designs.

McLeod's patented adapter ring system is the key to the RST's universal fitment. The large red adapter ring included with this kit bolts directly to large-diameter flywheels--Chevy 168-tooth, Ford 164T/176T/180T/184T, and BOP 160T/166T--eliminating the need for a dedicated flywheel. This covers GM V8 applications from '55-'85, Buick/Olds/Pontiac from '59-'79, and Ford 11"/11.5"/12" Long bolt patterns.

This clutch kit is designed for high-horsepower street use and is not intended for competition. For drag racing or sustained track use, step up to the RXT or RXT 1200 series. Pilot bushing and throwout bearing sold separately. Professional installation with proper flywheel resurfacing recommended. Backed by McLeod's 90-day limited warranty.

What's Included

• Diaphragm pressure plate assembly
• Two organic friction discs (9.687" diameter, 26-spline x 1-1/8", sprung hub)
• Floater plate
• Large red adapter ring for large-diameter flywheels
• Pilot alignment tool, (Pilot bushing sold separately)
• Installation instructions
• Lifetime technical support from MDL

Key Features

• 1,000 HP torque capacity - handles extreme horsepower while remaining street-driveable
• Two ceramic friction discs (9.687" diameter) with slightly aggressive engagement and soft pedal effort
• Solid hub design for maximum durability under high-torque loads
• Floater plate architecture for dual-disc holding power with excellent release characteristics
• 26-spline, 1-1/8" input shaft compatibility for T56, TKX, and similar transmissions
• McLeod patent-pending large diameter adapter ring - fits existing large-diameter flywheels without dedicated flywheel purchase
• Diaphragm-style pressure plate for lighter-than-stock pedal feel
• Compatible with multiple flywheel bolt patterns: 11" Long, 11-5/8" EQ, 11-5/12" Long, 12-3/8" EQ

Description

Street-legal performance cars are making more power than ever, and if you're rowing your own gears past the 500 HP mark, you need a clutch that can handle the abuse without sacrificing daily driveability. The McLeod RXT Twin Disc Clutch Kit solves the classic high-horsepower dilemma - massive holding power without the harsh engagement and heavy pedal effort that make twin-disc setups miserable in traffic.

Rated at 1,000 HP, the RXT uses two ceramic-faced 9.687" friction discs mounted to a solid hub, distributing clamping loads across four friction surfaces for superior heat dissipation and consistent engagement under hard launches. The ceramic facings provide slightly aggressive engagement - enough bite to transfer serious torque without the on/off grabbiness that plagues race-only clutches. The diaphragm-style pressure plate delivers lighter-than-stock pedal effort, making this a genuinely streetable setup for stop-and-go driving.

This economical kit uses McLeod's patent-pending large diameter adapter ring system, allowing you to retain your existing large-diameter flywheel rather than purchasing a dedicated unit. The large red adapter ring fits common big-flywheel applications including Chevy 168T, Ford 164T/176T/180T/184T, Chrysler 143T/172T, and Buick/Olds/Pontiac 160T/166T configurations. The 26-spline, 1-1/8" input shaft configuration matches T56, TKX, and other performance transmissions.

Compatible with 1955-85 Chevy V8 engines equipped with large diameter flywheels. Note: McLeod street performance clutches require a 500-750 mile break-in period of stop-and-go city driving (1,200-1,500 clutch cycles) before wide-open-throttle use or dyno tuning. This kit does not include a pilot bearing or throwout bearing. Made in the USA.

What's Included

• Diaphragm-style pressure plate
• Two ceramic friction discs (9.687" diameter, 26-spline, 1-1/8" hub)
• Solid hub assembly
• Steel floater plate
• McLeod patent-pending large diameter adapter ring
• Clutch alignment pilot tool
• Installation instructions with break-in procedure

Note: Pilot bearing and throwout bearing not included - inspect and replace as needed during installation.

Key Features

• 1,200 horsepower capacity for extreme street/strip builds
• Twin ceramic friction discs with slightly aggressive engagement and soft pedal effort
• Patent-pending large red adapter ring fits large-diameter flywheels including Chevy 168T
• 26-spline x 1-1/8" input shaft compatibility for aftermarket transmissions
• Diaphragm-style pressure plate for consistent clamping force
• Blanchard-ground floater plate with multiple straps reduces noise for streetability
• Economically priced kit without flywheel - uses your existing flat-style flywheel
• Made in the USA

Description

When you have pushed past 1,000 horsepower and still need to drive to the track, run hard, and drive home, the McLeod RXT 1200 delivers the holding power without the leg cramps. This twin-disc clutch handles up to 1,200 crank horsepower while maintaining a comfortable pedal feel that will not leave you massaging a charlie horse after a trip through downtown at rush hour.

The RXT 1200 features ceramic-lined clutch discs that provide slightly aggressive engagement with soft pedal effort. The higher clamp load compared to the standard RXT gives you the grip needed for serious power while the twin-disc design keeps rotating mass low for quick revs. The Blanchard-ground floater plate with multiple straps minimizes driveline noise - you may hear some feedback tones between 1200-1900 RPM, which is normal for twin-disc applications.

McLeod's patent-pending large red adapter ring system eliminates the need for a dedicated flywheel. The ring mounts to your existing large-diameter flat-style flywheel (Chevy 168T and similar) and provides the proper mounting surface for the twin-disc assembly. This adapter ring approach reduces cost while maintaining strength. Note: This kit requires a flat-style flywheel with a crank relief of 6.250" or less for proper fitment - it will not work with recessed or stepped flywheels.

Compatible with 1955-1985 Chevy V8 applications using transmissions with a 26-spline x 1-1/8" input shaft. Break-in requires 500-750 miles of stop-and-go city driving to properly seat the discs - actuate the clutch 1,200-1,500 times before any wide-open throttle driving. Pilot and throwout bearings sold separately. Backed by lifetime technical support from Modern Driveline.

What's Included

• Diaphragm pressure plate
• Two ceramic friction discs
• Blanchard-ground floater plate
• McLeod patent-pending large red adapter ring
• Pilot alignment tool
• Installation instructions
• Lifetime technical support

Note: Pilot bearing and throwout bearing not included. Flywheel not included - kit uses existing flat-style flywheel with adapter ring.

Key Features

• 850 lb-ft torque capacity with sprung-hub organic discs for smooth street engagement
• 246mm (9.7-inch) twin-disc design reduces rotating mass and increases heat capacity over single-disc clutches
• Precision-machined aluminum clutch cover derived from Tilton's OT-Series racing clutch technology
• Double-thickness floater plate eliminates gear chatter and provides superior heat dissipation
• Billet chromoly flywheel with 153-tooth ring gear and precision clutch register for optimal balance [VERIFY: custom field shows 157-tooth]
• 26-spline, 1-1/8-inch input compatible with TREMEC T-56 Magnum and TKO transmissions
• Heavy-duty straps attach pressure plate and floater to minimize noise and ensure clean release
• Compatible with most OEM release bearings (C6 Corvette applications require Tilton 6000-Series HRB)
• Made in the USA by Tilton Engineering

Description

High-horsepower LS builds demand a clutch that won't slip, chatter, or fail under load. The Tilton ST-246 twin-disc clutch and flywheel assembly delivers 850 lb-ft of holding power while maintaining the smooth engagement characteristics you need for daily street duty. Unlike the stamped steel "performance" clutches flooding the market, the ST-246 was engineered from the ground up as a true twin-disc clutch—not an OEM pressure plate with a floater bolted on as an afterthought.

The precision-machined aluminum clutch cover shares technology directly from Tilton's championship-winning OT-Series racing clutches used in F1, NASCAR, IMSA, IndyCar, and Formula Drift. This design delivers superior strength, stiffness, and dynamic balance compared to stamped steel alternatives. The high-mass main pressure plate and floater plate are machined from proprietary materials used in Tilton's racing clutches, providing exceptional heat capacity and warpage resistance. The floater plate is twice the thickness of most competitor twin-disc clutches—this extra mass allows for the sprung hub design while eliminating gear chatter and improving heat dissipation during hard use.

The sprung-hub organic discs dampen engine vibrations and reduce transmission noise, delivering engagement characteristics you can live with in traffic. The included billet chromoly flywheel features a precision register that locates the clutch for optimal balance—a significant improvement over the loose-fitting bolts and dowels found on stamped steel clutch assemblies. Internal balance matches LS1, LS2, LS3, LS6, and LS7 engines with 6-bolt crankshaft flanges.

This kit works with most OEM hydraulic release bearings. C6 Corvette and Gen5 Camaro applications require a Tilton 6000-Series hydraulic release bearing (sold separately for this kit). Pilot bearing and throwout bearing are not included. Designed for TREMEC T-56 Magnum and TKO transmissions with 26-spline, 1-1/8-inch input shafts.

What's Included

• Billet chromoly steel flywheel with 153-tooth ring gear, internally balanced [VERIFY: custom field shows 157-tooth]
• Precision-machined aluminum clutch cover with OT-Series racing technology
• High-mass main pressure plate with heavy-duty attachment straps
• Double-thickness steel floater plate with heavy-duty attachment straps
• Two 246mm organic clutch discs with sprung hubs (26-spline, 1-1/8-inch)
• Flywheel mounting bolts
• Clutch cover mounting bolts
• Clutch alignment tool
• Installation instructions

Tilton ST-246 Twin-Disc Clutch Kit | GM LSA/LSX 8-Bolt | 850 lb-ft Organic

Key Features

• 850 lb-ft torque capacity with sprung-hub organic discs for smooth street engagement
• Precision-machined aluminum pressure plate cover - superior strength and balance vs. stamped steel OEM-style units
• Double-thick floater plate eliminates gear chatter and provides superior heat dissipation
• Billet chromoly flywheel with 153-tooth ring gear and precision register for optimal balance [VERIFY: Product data lists both 153-tooth and 168-tooth ring gear - confirm correct spec]
• Heavy-duty straps connect pressure plate and floater to minimize noise and ensure clean release
• 26-spline disc hub (26 x 1-1/8") - compatible with TREMEC T-56, TKO, and similar transmissions
• Internally balanced (zero-balance) flywheel for GM LSA/LSX 8-bolt crank flange
• Tilton HR throwout bearing included [VERIFY: Main description says included, custom field says not included - confirm kit contents]
• Engineered from 50+ years of Tilton racing clutch technology

Description

When your LSA or LSX build pushes beyond what factory clutches can handle, the Tilton ST-246 delivers race-proven holding power with street-friendly manners. Rated at 850 lb-ft of torque, this twin-disc assembly was engineered from the ground up as a true performance clutch - not an afterthought OEM stamped-steel cover with a floater plate tacked on. The precision-machined aluminum pressure plate cover shares technology directly from Tilton's championship-winning OT-Series racing clutches, providing superior strength, stiffness, and dynamic balance compared to the stamped steel alternatives.

The ST-246's secret weapon is its floater plate design - machined at twice the thickness of competing twin-disc clutches. This extra mass serves three critical functions: it allows the use of sprung-hub discs for smooth engagement, eliminates the gear chatter common in twin-disc setups, and provides significantly greater thermal capacity to resist warpage under hard use. Heavy-duty straps connect the pressure plate and floater to the cover, minimizing noise and delivering a clean, predictable release.

The organic friction discs feature sprung center hubs that dampen engine vibrations and reduce gearbox noise - essential for a streetable driving experience. The billet chromoly flywheel includes an integrated ring gear and a precision register bore that locates the clutch assembly perfectly, eliminating the loose-fitting bolts and dowel pins that create imbalance in lesser setups. This kit is designed specifically for GM LSA and LSX engines with 8-bolt crankshaft flanges and mates to 26-spline input shaft transmissions including TREMEC T-56 and TKO variants.

Since 1972, Tilton Engineering has supplied championship-winning clutches to the highest levels of motorsport - F1, NASCAR, IMSA, IndyCar, SCCA, Formula Drift, and SCORE. The ST-246 brings that proven expertise to the high-performance street market at a competitive price point.

What's Included

• Precision-machined aluminum clutch cover assembly with heavy-duty straps
• High-mass pressure plate machined from proprietary racing clutch materials
• Double-thick steel floater plate
• Two organic friction discs with sprung center hubs (26 x 1-1/8" spline)
• Billet chromoly steel flywheel with integrated ring gear (internally balanced for 8-bolt LSA/LSX)
• Clutch alignment tool
• Flywheel bolts
• Clutch cover bolts
• Tilton HR throwout bearing [VERIFY: Confirm if throwout bearing is included or not]
• Installation instructions

Note: Pilot bearing not included.

Key Features

• Solid-hub cerametallic discs rated for 1250 lb-ft of torque - delivers race-proven strength for street/strip use
• Precision-machined aluminum clutch cover - higher strength, stiffness, and better dynamic balance than OE-type stamped steel covers
• Floater plate twice the thickness of most twin-disc clutches - enables solid-hub design, eliminates gear clatter, and provides superior heat dissipation
• Billet chromoly flywheel with integrated 168-tooth ring gear - reduces rotating mass while delivering long-term durability
• High-mass pressure plates machined from proprietary racing materials - provides exceptional heat capacity and resists warpage
• 246mm (9.7") disc diameter with 26-spline x 1-1/8" input - direct fit for TREMEC T56 and TKO transmissions
• Heavy-duty straps attach plates to cover - minimize noise and provide clean clutch release
• Compatible with most OEM release bearings

Description

High-output LS engines demand more than stamped steel clutches can deliver. The Tilton ST-246 solves the torque capacity problem without sacrificing streetability. Unlike many performance clutches on the market, ST-246 clutches were designed from the ground up as a true performance twin-disc clutch - not an OEM-type stamped steel pressure plate with a floater added. This complete assembly delivers racing technology in a package engineered specifically for street/strip use.

The aluminum clutch cover shares technology from Tilton's championship-winning line of OT-Series racing clutches, providing superior strength and balance compared to stamped steel alternatives. The ultra-thick floater plate design enables the solid-hub cerametallic discs to handle extreme torque loads while eliminating the gear rattle common with thinner designs. Proprietary pressure plate materials deliver exceptional heat dissipation - critical for repeated hard launches and track use.

The billet chromoly flywheel features a precision register system that ensures optimal clutch positioning and balance, eliminating the loose-fitting bolt patterns that plague lesser designs. The integrated 168-tooth ring gear reduces weight compared to separate press-fit rings while maintaining the strength needed for high-RPM operation. Since 1972, Tilton Engineering has been the leading supplier of small-diameter racing clutches, with championships in F1, NASCAR, IMSA, IndyCar, SCCA, Formula Drift, and SCORE.

Designed for Chevy LS1, LS2, LS3, LS6, and LS7 engines with 6-bolt crank flanges. The 26-spline x 1-1/8" hub pattern provides direct compatibility with TREMEC T56 and TKO transmissions. Can be used with most OEM release bearings. Pilot bearing and throwout bearing not included.

What's Included

• Precision-machined aluminum clutch cover assembly
• High-mass pressure plate with proprietary racing material construction
• Ultra-thick floater plate with heavy-duty mounting straps
• Two 246mm solid-hub cerametallic friction discs
• Billet chromoly flywheel with integrated 168-tooth ring gear
• Flywheel mounting bolts
• Clutch mounting hardware
• Alignment tool
• Installation instructions

Key Features

• 1,250 lb-ft torque capacity with solid-hub cerametallic discs - built for serious street/strip power
• 246mm (9.7") disc diameter provides superior heat dissipation and clamping force
• Precision-machined aluminum clutch cover - higher strength and stiffness than stamped steel OEM designs
• Billet chromoly steel flywheel with integrated 168-tooth ring gear and precision clutch register
• Floater plate twice the thickness of most competitors - eliminates gear chatter and dramatically improves heat capacity
• Heavy-duty straps connect pressure plate and floater to cover - minimizes noise, provides clean release
• 26-spline x 1-1/8" input shaft compatibility - direct fit for TREMEC T56, TKO, TKX, and Magnum transmissions
• 8-bolt crank flange pattern for LSA, LSX, LT1, and LT4 engines
• Complete assembly weight: 46.4 lbs

Description

When you're pushing serious power through an LSX or LT4 engine, clutch failure isn't an option. The Tilton ST-246 was engineered from the ground up as a true performance twin-disc clutch - not an OEM-type stamped steel pressure plate with a floater tacked on as an afterthought. This is race-derived technology built for the street, drawing on Tilton's nearly 50 years of championship-winning experience in F1, NASCAR, IMSA, IndyCar, and Formula Drift.

The engineering details set the ST-246 apart. The precision-machined aluminum clutch cover shares technology with Tilton's OT-Series racing clutches, delivering higher strength, better stiffness, and superior dynamic balance compared to stamped steel competitors. The high-mass pressure plate and floater plate are machined from the same proprietary materials used in Tilton's racing clutches, providing exceptional heat capacity and warp resistance. That floater plate runs twice the thickness of typical twin-disc setups - this eliminates gear chatter and provides dramatically better heat dissipation under hard use.

This specific kit features solid-hub cerametallic discs rated for 1,250 lb-ft of torque, delivering the positive, precise engagement characteristics needed for street/strip applications. The billet chromoly steel flywheel includes an integrated 168-tooth ring gear and precision register system that provides optimal clutch-to-flywheel balance - no loose-fitting bolts or dowels like stamped steel units. Heavy-duty straps connect the plates to the cover, minimizing noise while ensuring fast, clean releases between shifts.

Designed for Chevy LSA, LSX, LT1, and LT4 engines with 8-bolt crank flange patterns. Compatible with TREMEC T56, TKO, TKX, and Magnum transmissions via the 26-spline x 1-1/8" input shaft. This assembly does not include a pilot bearing or throwout bearing - it can be used with most OEM release bearings, or pair it with a Tilton 6000-Series hydraulic release bearing for optimal performance.

Kit Includes

• Billet chromoly steel flywheel with integrated 168-tooth ring gear (internally balanced)
• Precision-machined aluminum clutch cover
• High-mass pressure plate (proprietary racing materials)
• Heavy-duty floater plate (2x thickness vs. competitors)
• Two cerametallic clutch discs with solid-hub centers (26-spline x 1-1/8")
• Heavy-duty connecting straps
• Clutch mounting bolts
• Flywheel mounting bolts
• Spline grease
• Alignment tool
• Lifetime technical support from MDL

Note: Pilot bearing and throwout bearing not included.

Key Features

• Complete manual clutch pedal conversion kit for 1967 Corvette Stingray
• Swing-mounted pedal design specific to 1967 C2 chassis
• Everything needed to convert from automatic to manual transmission
• Compatible with both 327 and 427 engine applications
• Eliminates the need to source individual pedal components separately

Description

Converting a 1967 Corvette from automatic to manual transmission requires more than just swapping gearboxes - you need a complete clutch pedal assembly designed specifically for the C2 chassis. This kit provides everything required to add a proper clutch pedal to your Stingray, whether you're installing a period-correct Muncie 4-speed or upgrading to a modern TREMEC 5 or 6-speed.

The 1967 model year is unique among C2 Corvettes, with pedal geometry and mounting provisions that differ from 1963-1966 cars. This kit addresses those year-specific requirements with components designed for the '67 chassis. The swing-mounted pedal assembly installs into your existing pedal support under the dash, maintaining factory-correct geometry and proper clutch engagement feel.

Rather than hunting down individual components from multiple sources - pedal arm, pushrod bracket, pedal shaft, mounting hardware - this complete kit ensures all parts are properly matched and ready for installation. It's the foundation for any manual transmission conversion in your 1967 Corvette.

What's Included

• Complete clutch pedal assembly
• Pedal shaft
• Clutch pushrod bracket
• Mounting hardware
• All components needed for complete conversion [VERIFY: exact contents of kit - description states "complete kit with everything you'll need" but does not itemize specific components]

Key Features

• Tilton 78 Series master cylinder with 0.75-inch bore and billet aluminum construction
• Frame-mounted design requires zero modifications to the car or firewall
• Direct bolt-on to original 4-speed chassis mounting points eliminates bracket flex
• Black anodized billet aluminum remote reservoir with stainless braided -4AN lines
• Rear spherical bearing mount and one-piece piston/pushrod eliminate side thrust for consistent clutch engagement
• Complete 1967 pedal bracket included for proper master cylinder positioning
• One-man bleeder kit included for simplified installation
• Designed and made in the USA

Description

Eliminate the worn Z-bar linkages, vague pedal feel, and constant adjustment headaches of your '67 Corvette's mechanical clutch system. This Bowler Performance hydraulic clutch master kit converts your C2 to smooth, modern hydraulic operation while mounting directly to the original frame--no firewall drilling, no universal brackets, no compromises.

The system centers on a precision Tilton 78 Series master cylinder featuring a 0.75-inch bore billet aluminum body with proprietary low-friction coatings for smooth operation and minimal wear. The rear spherical bearing mount and one-piece piston/pushrod design eliminate side thrust into the master cylinder bore, delivering consistent and repeatable clutch engagement every time. The stroke is specifically matched to work with your factory pedal assembly.

Unlike universal kits that rely on flimsy firewall-mounted brackets, this engineered solution bolts directly to your original 4-speed chassis mounting points. That rigid frame connection eliminates the bracket flexing that causes spongy pedal feel and inconsistent slave cylinder actuation. The kit includes a complete 1967 pedal bracket, so your clutch pedal maintains factory geometry and feel.

Installation requires an original manual transmission frame or the addition of original Z-bar brackets to an automatic frame. The system works with factory pedal assemblies and OE reproduction aftermarket pedals. Use DOT 3 or DOT 4 brake fluid only. Slave cylinder and slave supply line sold separately.

What's Included

• Tilton 78 Series master cylinder with 0.75-inch bore, sized for factory pedal assembly
• Billet aluminum frame-mount bracket
• 24-inch stainless braided -4AN line with male-to-male adapter for master-to-reservoir connection
• 12-inch stainless braided -4AN line
• -4AN 90-degree fitting for slave cylinder supply line
• Black anodized billet aluminum remote reservoir
• 1967 pedal bracket
• Complete mounting hardware and fittings
• One-man bleeder kit
• Installation instructions

Key Features

• 24-inch stainless steel braided hose with 1/4-inch I.D. and PTFE (Teflon) inner lining
• -4AN female straight fittings on both ends with stainless steel crimp sleeves
• Clear plastic outer coating protects braid and allows visual inspection
• Ideal length for Tilton 6000 HRB units with -4AN male union to firewall-mounted master cylinders
• Pressure tested before shipping for quality assurance
• 100% made in the USA

Description

Hydraulic clutch systems demand leak-free, pressure-resistant fluid lines that won't degrade over time or expand under load. This 24-inch stainless steel braided line delivers the durability and consistent pedal feel that separates a professional hydraulic clutch installation from a compromise. The PTFE (Teflon) inner lining provides excellent chemical compatibility with all common hydraulic fluids while resisting the swelling and deterioration that plague standard rubber lines.

The stainless steel braided construction prevents expansion under pressure, maintaining a firm, responsive clutch pedal. Unlike rubber hoses that can balloon and soften pedal feel, stainless braided PTFE lines keep the inner diameter uniform for efficient fluid transfer. The clear plastic outer coating shields the braid from abrasion, contamination, and corrosion while letting you visually inspect line condition at a glance.

At 24 inches with a 1/4-inch I.D., this line is sized specifically for hydraulic clutch applications. It's an excellent choice when pairing a Tilton 6000 HRB with an -4AN male union to a firewall-mounted or bulkhead-mounted master cylinder. The straight -4AN female fittings on both ends connect directly to standard -4AN male adapters without additional fittings, reducing potential leak points and simplifying installation.

Every line is pressure tested before leaving the facility to verify seal integrity. Premium stainless steel crimp sleeves and fittings ensure a permanent, vibration-resistant connection. Proudly manufactured in the United States.

What's Included

• One 24-inch stainless steel braided hydraulic line with PTFE inner lining
• -4AN female straight fittings pre-crimped on both ends
• Clear plastic protective coating (factory applied)
• Pressure tested before shipping

Key Features

• Precision-welded steel construction for maximum strength and durability
• Three-hole mounting pattern for secure attachment to GM-style crossmembers
• Compatible with GM T5 and MDL Front-Shift T5 transmissions
• Protective coating resists corrosion in harsh underbody environments
• Rubber contact pad isolates drivetrain vibration
• Requires MD-201-Mount 1102 hardware kit (sold separately)

Description

Maintaining the correct driveline angle between your transmission and driveshaft is critical for smooth operation and component longevity. This GM & Front-Shift T5 Transmission Mount provides the secure, vibration-damping connection point your drivetrain demands, whether you're running a factory GM T5 or MDL's specialized Front-Shift T5 conversion.

Built from precision-welded steel and finished with a durable protective coating, this mount handles transmission loads while shrugging off road grime, moisture, and corrosion. The integrated rubber contact pad isolates vibration, keeping NVH out of the cabin and reducing stress on surrounding components. The three-hole mounting pattern ensures proper load distribution and secure positioning on GM-style crossmembers and tail housings.

This mount is engineered specifically for GM-pattern tail housings and MDL's popular Front-Shift T5 tailhousing conversions, making it the ideal choice for builders working with either configuration. The robust construction eliminates flex under load, protecting your transmission investment and ensuring consistent driveline geometry.

Complete your installation with the MD-201-Mount 1102 hardware kit, sold separately.

Kit Includes

• One precision-welded steel transmission mount with protective coating
• Bonded rubber contact pad for vibration isolation

Note: MD-201-Mount 1102 hardware kit required for installation, sold separately.

Key Features

• Chrome-plated high strength steel construction — show-quality finish with durability for daily driving
• 7-inch lever length with 1-5/8-inch shift ball — period-correct dimensions match '63-'67 Corvette OEM appearance
• Direct bolt-on fitment for TKX, TKO, and T56 transmissions — 3/8-inch mounting holes on 7/8-inch center-to-center spacing
• Installation hardware included — ready to install out of the box

Description

Swapping a TREMEC transmission into your mid-year Corvette shouldn't mean sacrificing the factory look. This OEM-style shift lever delivers the authentic '63-'67 Corvette appearance while providing direct bolt-on compatibility with modern TKX, TKO, and T56 transmissions.

Built from high strength steel with a show-quality chrome-plated finish, this lever replicates the original Corvette shifter aesthetics down to the correct 7-inch length and 1-5/8-inch diameter shift ball. Whether you're building a restomod that honors the original interior or restoring a numbers-matching car with a modern transmission upgrade, this lever maintains the classic cockpit appearance that defines the mid-year Corvette experience.

The standard TREMEC mounting pattern — 3/8-inch holes spaced 7/8-inch on center — ensures proper fitment with your transmission's shifter assembly. No adapters or modifications required; simply bolt it on and enjoy crisp, precise shifts with factory-correct looks.

What's Included

• Chrome-plated high strength steel shift lever (7-inch length)
• 1-5/8-inch chrome shift ball
• Installation hardware

Key Features

• Direct-fit replacement for 1964-1967 C2 Corvette manual transmissions
• Compatible with both 3-speed and 4-speed manual gearboxes
• Durable rubber construction resists cracking and deterioration
• OEM-style design maintains factory-correct interior appearance
• Easy installation - straightforward replacement for any skill level

Description

Cracked, torn, or missing shift boots do more than look bad - they let dirt, debris, and noise into your C2 Corvette's interior. This replacement rubber shift boot restores the clean, finished look around your shifter while protecting the transmission tunnel from contamination.

Designed specifically for 1964-1967 Corvette applications, this boot fits both 3-speed and 4-speed manual transmissions without modification. The rubber construction matches the factory original in appearance and feel, delivering the period-correct look your restoration or driver demands. The material is formulated to resist the cracking and deterioration that plagues aged original boots.

Installation is rated easy - the factory-style design drops right into place without cutting, trimming, or modification. Whether you're completing a full restoration or just tidying up a driver, this boot gets the job done right. Note: This kit includes the shift boot only; bezel is not included.

Kit Includes

• Rubber shift boot (1)

Key Features

• Converts Ford-style slip-in speedometer drive to GM 7/8" threaded cable connection
• Fits Ford T5, all 3550/TKO transmissions, Ford T56 with cable drive, and all TREMEC Magnum six-speeds
• Double O-ring seal at the transmission case plus internal seal to prevent fluid leaks
• Steel construction for accurate readings and long service life
• Eliminates the need for expensive custom speedometer cables

Description

TREMEC T56 Magnum, TKX, and TKO transmissions all use a Ford-style mechanical speedometer drive, which creates a compatibility problem for GM muscle cars and hot rods equipped with traditional GM speedometers and 7/8" threaded cables. Rather than sourcing an expensive custom cable, this adapter assembly converts the Ford slip-in driven gear interface to accept a standard GM threaded speedometer cable directly.

The adapter features a double O-ring seal at the transmission case opening combined with an internal seal where the cable attaches. This dual-seal design addresses a common complaint with lesser adapters that allow transmission fluid to leak through the cable attachment point. Steel construction ensures the drive spindle maintains accuracy and durability under demanding conditions.

Installation is straightforward: the adapter inserts into the transmission's speedometer housing where the driven gear normally sits, and your existing GM speedometer cable threads onto the adapter's external 7/8" fitting. This assembly fits Ford T5, all 3550/TKO variants, Ford T56 transmissions with cable drive, and all TREMEC Magnum six-speed transmissions. Note that speedometer driven gears and retaining clips are sold separately and must be matched to your tire size and rear axle ratio for accurate speedometer readings. Made internationally.

What's Included

• Speedometer cable adapter assembly with steel drive spindle
• Full manufacturer's warranty

Key Features

• Converts Ford slip-in speedometer drive to GM 7/8" threaded cable connection
• Double O-ring seal system prevents transmission case leakage at the housing
• Internal seal stops fluid from traveling up the speedometer cable
• Swiss steel drive spindle delivers superior strength and accuracy
• Billet housing with naval brass bushing for smooth, long-lasting operation
• One-piece design eliminates multiple failure points found in cheaper adapters
• Made in the USA

Description

TREMEC T-56 Magnum, TKX, TKO, and T5 transmissions use a Ford-based mechanical speedometer drive, which creates a problem when you're running a GM chassis with a 7/8" threaded speedometer cable. Without an adapter, you're stuck either fabricating a custom cable or dealing with a leak-prone import solution that fails at the worst possible time.

This precision-machined adapter is engineered to eliminate the chronic leakage issues that plague cheaper alternatives. The double O-ring seal system addresses leaks at the transmission case opening, while a dedicated internal seal prevents fluid from wicking up through the cable attachment point—a common failure mode on single-seal designs. The Swiss steel drive spindle provides extra strength and accuracy for consistent speedometer readings over the life of the build.

The billet housing paired with a naval brass bushing ensures smooth cable rotation and extended service life, even in high-vibration environments. The one-piece construction eliminates the potential leak paths and wear points found in multi-piece adapter assemblies.

Fits Ford T5, all 3550/TKO models, TKX, Ford T56 with cable drive, all TREMEC Magnum six-speeds, and Ford three- and four-speed transmissions. Made in the USA with full warranty coverage.

Kit Includes

• Billet speedometer cable adapter housing
• Swiss steel drive spindle
• Naval brass bushing
• Dual O-ring seals for transmission case
• Internal cable seal
• Full manufacturer's warranty

Key Features

• 16-tooth driven gear corrects speedometer accuracy for Ford manual transmission swaps
• Wine color coding for easy tooth count identification during installation and service
• Direct fit for Ford T5, T45, TKO, TKX, and T56 Magnum transmissions
• Precision-molded construction for smooth, reliable operation

Description

When you swap to a 5- or 6-speed transmission, your original speedometer gear won't work with the new final drive ratio, throwing off your speedometer readings. This 16-tooth driven gear provides the correct gear ratio match to restore accurate speedometer operation in Ford T5, T45, TKO, TKX, and T56 Magnum applications.

Selecting the correct driven gear depends on your rear axle ratio and tire diameter. The wine-colored housing provides instant visual confirmation of the 16-tooth count during installation and future service, eliminating guesswork when fine-tuning your speedometer calibration. Each tooth change adjusts the speedometer reading approximately 4-5 mph, so selecting the right gear for your combination is critical.

This is the correct driven gear for all Ford T5, T45, TKO, TKX, and T56 Magnum transmissions. Whether you're building a street machine that sees daily driving or a weekend cruiser that needs reliable instrumentation, this precision-molded gear delivers smooth, accurate speedometer operation mile after mile.

What's Included

• 16-tooth speedometer driven gear with wine-colored housing

Key Features

• 17-tooth driven gear with white color coding for easy identification
• Direct fit for Ford TREMEC transmissions: T5, T45, TKO, TKX, and T56 Magnum
• Precision-molded plastic construction for smooth, quiet operation
• Lower tooth count for higher axle ratios and/or taller tires
• Works with cable-driven mechanical speedometer systems

Description

Swapping to a 5 or 6-speed TREMEC transmission changes your final drive ratio, which means your factory speedometer gear combination no longer reads accurately. This 17-tooth white driven gear lets you recalibrate your mechanical speedometer to match your new drivetrain setup.

Speedometer driven gear selection depends on four variables: drive gear tooth count (on the output shaft), driven gear tooth count, tire diameter, and axle ratio. The 17-tooth count is typically paired with lower-numerical axle ratios or taller tires. Use a speedometer gear calculator to determine the correct tooth count for your specific combination of drive gear, rear end ratio, and tire height.

The white color coding makes this gear instantly identifiable, both in your parts bin and during installation. This precision-molded plastic gear meshes smoothly with the transmission's output shaft drive gear, delivering reliable operation without the noise or wear issues that can plague poorly-manufactured replacements.

This driven gear fits all Ford TREMEC transmissions including T5, T45, TKO, TKX, and T56 Magnum. Whether you're building a classic Mustang, Fairlane, or any Ford platform with a mechanical speedometer, this gear helps dial in accurate speed readings after your manual transmission conversion.

Kit Includes

• 17-tooth speedometer driven gear, white plastic

Speedometer Driven Gear | Ford T5/T45/TKO/TKX/Magnum | 18-Tooth Yellow

Key Features

• 18-tooth driven gear for speedometer calibration on Ford-pattern transmissions
• Yellow color-coded for quick identification during installation and service
• Fits Ford T5, T45, TKO, TKX, and T56 Magnum transmissions
• Precision molded for accurate tooth engagement and long service life
• Direct replacement--installs into existing speedometer drive housing without modification

Description

When you swap in a 5- or 6-speed manual transmission, your factory speedometer gear ratio goes out the window. The new transmission's final drive ratio won't mesh with your original speedo gear, leaving your speedometer reading inaccurately--sometimes wildly so. This 18-tooth yellow driven gear lets you dial in the correct speedometer calibration for your specific tire size and rear axle ratio combination.

This driven gear fits the full range of Ford-pattern TREMEC transmissions: T5, T45, TKO, TKX, and T56 Magnum. The industry-standard yellow color coding makes identification simple--no guessing which tooth count you're running when it's time for service or recalibration after a gear ratio change. The precision-molded construction ensures consistent tooth engagement with the drive gear for accurate, reliable speedometer readings mile after mile.

Installation is straightforward--the gear slides directly into the transmission's speedometer drive housing. If your speedometer calibration calculations call for more than 21 teeth (the maximum available driven gear size), you'll need to reduce the drive gear tooth count instead. Use a speedometer gear calculator with your tire diameter, axle ratio, and transmission drive gear tooth count to determine the correct driven gear for your application.

Kit Includes

• 18-tooth yellow speedometer driven gear

Key Features

• 19-tooth driven gear for precise speedometer calibration
• Pink color-coded for instant tooth count identification
• Fits Ford T5, T45, TKO, TKX, and TREMEC T56 Magnum transmissions
• Essential for correcting speedometer accuracy after gear ratio or tire size changes
• Precision molded construction for reliable, long-lasting operation

Description

When you swap transmissions, change rear axle ratios, or bolt on different tire sizes, your speedometer no longer reads correctly. This 19-tooth driven gear lets you recalibrate for accurate readings by changing the gear ratio between your transmission's output and the speedometer cable. It's the driven gear -- the one that mounts to the speedometer cable end and inserts into the transmission tailhousing.

The pink color follows Ford's standardized identification system, making it easy to confirm the tooth count at a glance when you're sorting through your parts bin or comparing against your current setup. If your speedometer reads too fast with your current gear, stepping up to this 19-tooth unit will slow the reading. Each additional tooth changes the speedometer reading by approximately 5-6%. If you need an even higher tooth count, 21-tooth is the largest available in the driven gear; beyond that, you'll need to reduce the drive gear size instead.

This gear fits all Ford T5, T45, and Ford T56 transmissions, as well as all TREMEC TKO, TKX, and T56 Magnum units. Installation is straightforward: remove the speedometer cable from the tailhousing, swap the driven gear, and reinstall.

What's Included

• One 19-tooth speedometer driven gear (pink)

Key Features

• 20-tooth driven gear for precise speedometer calibration
• Black color-coded for easy identification per Ford specification
• Fits Ford T5, T45, Ford T56, TREMEC T56 Magnum, TKO, and TKX transmissions
• Direct replacement for worn or incorrect factory gears
• Precision-molded plastic construction for durability and accurate engagement

Description

Transmission swaps and axle gear changes throw off speedometer accuracy - this 20-tooth driven gear gets your needle reading true again. When you install a five- or six-speed manual, the final drive ratio no longer matches your original speedometer gear, leaving you guessing at your actual speed. The correct driven gear restores accurate instrumentation so you know exactly how fast you're going.

This precision-molded driven gear is color-coded black for 20-tooth identification, following the standard Ford speedometer gear system. It pairs with the 7-tooth drive gear found on TREMEC TKO 500, TKO 600, TKX, and T56 Magnum transmissions to dial in speedometer accuracy for specific tire and axle combinations. Calculate your correct tooth count based on your tire diameter and rear axle ratio - if your math points to 20 teeth, this is your gear.

Note that 21 tooth is the largest driven gear size available for these applications. If your calculations call for a larger tooth count beyond 21, reducing the drive gear size provides the necessary calibration adjustment. Compatible with all Ford T5, T45, Ford T56, TREMEC T56 Magnum, and all TKO and TKX variants.

What's Included

• One 20-tooth driven speedometer gear (black)

Key Features

• 21-tooth red gear follows Ford's factory color-coding system for manual transmissions
• Largest standard driven gear tooth count available for maximum speedometer correction
• Fits all TREMEC transmissions using Ford-style speedometer systems: T5, T45, TKO, TKX, and T56 Magnum
• Precision molded nylon construction for smooth, quiet operation and long service life
• Direct drop-in replacement--no modifications required

Description

Swapping to a 5 or 6-speed TREMEC transmission changes your final drive ratio, which throws off your factory speedometer calibration. This 21-tooth red driven gear lets you recalibrate your mechanical speedometer to read accurately with your specific tire size and rear axle ratio combination--no electronic tuner required.

Ford has used a consistent color-coding system for manual transmission speedometer gears since the 1960s: 16-tooth wine, 17-tooth white, 18-tooth yellow, 19-tooth pink, 20-tooth black, and 21-tooth red. As the largest tooth count in the standard range, this red 21-tooth gear provides maximum correction for applications with taller tires or numerically higher axle ratios. Each tooth of difference adjusts your speedometer reading approximately 5-6%, so selecting the correct count is critical for accuracy.

The driven gear installs into the speedometer housing on the tailshaft of your transmission, where it meshes with the drive gear on the output shaft. TKO, TKX, and T56 Magnum transmissions come from the factory with a 7-tooth drive gear, making this 21-tooth driven gear the correct starting point for common combinations like 3.55 or 3.73 rear gears with 26-inch or taller tires. Use a speedometer gear calculator with your actual tire diameter and axle ratio to confirm the correct tooth count for your build.

This gear is compatible with Ford T5, T45, TKO, TKX, and T56 Magnum transmissions. The driven gear works with both cable-driven and VSS-equipped speedometer systems--just swap it into your existing housing.

What's Included

• 21-tooth red speedometer driven gear (precision molded nylon)

Key Features

• Secures driven speedometer gear for proper placement and operation in Ford T5 transmissions
• Direct replacement for original clips that have become brittle from heat exposure
• Essential component for automatic-to-manual conversions where no clip exists
• Compatible with all Ford T5 transmissions

Description

Clip-style speedometer gears require a retaining clip to lock the driven gear securely in the transmission housing, and this replacement clip delivers the secure fit your Ford T5 needs. Without a properly functioning clip, the driven speedometer gear can back out of the housing during operation, causing inaccurate speedometer readings and potential fluid loss.

Original retaining clips often become brittle after years of heat cycling in the transmission environment. If you're servicing your Ford T5, T-45, T-56, TKO/TKX, and Magnum speedometer gear or coming from an automatic transmission that didn't use a mechanical speedometer setup, a new retaining clip ensures your driven gear stays exactly where it needs to be. This is an inexpensive detail that makes the difference between a speedometer that works reliably and one that gives you trouble down the road.

This clip is the correct fitment for all Ford T5 transmissions and works with standard Ford-style driven speedometer gears. Keep one on hand whenever you're doing speedo gear service work.

What's Included

• One (1) retaining clip for Ford driven speedometer gear

Key Features

• Tin-plated brass terminals for corrosion resistance and reliable signal transmission
• Compatible with Ford VSS connector style used in 1987-1995 Mustangs
• Works with Ford and GM TREMEC Magnum two-wire analog OSS output
• Fits Ford TKO/TKO 500-600, TKX, and T45/3650 transmissions
• Two-wire design matches OE Ford VSS signal format

Description

When you install a TREMEC transmission in your build, you need a clean way to send speed data to your electronic speedometer or ECU. This harness provides the critical link between your transmission's output speed sensor (OSS) and your vehicle's existing Ford-style VSS wiring. It's designed specifically for the two-wire analog speed sensor output found on Ford and GM TREMEC Magnum transmissions, as well as Ford TKX, TKO, and T45/3650 units.

The terminals are constructed from tin-plated brass, which resists corrosion and maintains solid electrical contact even in harsh underhood environments. This matters because intermittent speed signals cause erratic speedometer readings and can throw off ECU calculations that rely on vehicle speed data. The Ford VSS connector style was used across a wide range of 1987-1995 Ford vehicles, making this harness the right choice when you're tying into an existing Ford wiring harness or EFI system from that era.

This harness is the simple, direct solution for builders running electronic speedometers with TREMEC 5- and 6-speed transmissions. Whether you're completing a resto-mod Mustang with modern gauges or wiring a GM-pattern Magnum into a classic muscle car, this connector eliminates guesswork and custom splicing.

What's Included

• Electronic speedometer harness with tin-plated brass terminals
• Ford VSS-style two-wire connector

Key Features

• Microprocessor-controlled lockout system prevents accidental reverse engagement above approximately 5 MPH
• Six-wire harness with integrated inline fuse for complete installation
• Universal fitment for all T56, T56 Magnum, and TR6060 transmissions
• Weather-resistant construction - interior mounting recommended for maximum longevity
• Two dedicated wires for solenoid output control
• Two wires for VSS (vehicle speed sensor) signal input
• Switched power and ground connections included
• Eliminates need for brake light switch or manual button workarounds
• Factory-like speed-based operation without requiring an OEM computer

Description

When you swap a TREMEC T56, T56 Magnum, or TR6060 into a classic or performance build, you lose the factory computer's ability to control the reverse lockout solenoid. Without proper control, the transmission becomes prone to inadvertent grinding into reverse gear while attempting to shift into 5th - a common problem since these gears are located very close to each other in the shift pattern. Manual workarounds like wiring to the brake light switch create their own problems: you can step on the brake at highway speed and still accidentally engage reverse.

This Reverse Lockout Control Module solves the problem with intelligent speed-based control. The heart of this module is a microprocessor that continuously monitors vehicle speed through the VSS signal. At low vehicle speeds, the reverse lockout solenoid is energized, retracting the blocking pin and allowing you to shift smoothly into reverse. Above approximately 5 MPH, the module de-energizes the solenoid, locking out reverse gear access and preventing costly transmission damage from an accidental shift. This creates factory-like operation without the need for an OEM PCM or ECM.

The six-wire harness simplifies installation with dedicated circuits: two wires for switched power and ground, two wires for VSS signal input from the transmission speed sensor, and two wires for solenoid output. The integrated inline fuse protects the circuit. While the module features weather-resistant construction, mounting inside the vehicle interior is recommended for maximum longevity. The system requires no special programming or calibration - wire it up and it works.

This module is essential for any T56-family transmission swap where the factory computer control is unavailable. It controls the reverse lockout solenoid found on all Borg Warner and TREMEC T56, Magnum, and TR6060 transmissions, restoring the safety and convenience of proper reverse lockout operation that these transmissions were designed to have.

What's Included

• Reverse lockout control module with microprocessor
• Six-wire harness with color-coded leads
• Inline fuse
• Installation instructions
• MDL lifetime technical support

Key Features

• Integrates reverse lockout control, dual VSS outputs, and reverse light wiring into one harness
• Speed-based reverse lockout: locked above 4 MPH, unlocked at 0-3 MPH (user-adjustable via app)
• Dual independent speed sensor outputs with customizable pulse counts (default: 40-pulse and 16-pulse)
• Bluetooth-enabled epoxy-sealed controller mounts to existing VSS bolt
• Square wave output: -5V to +5V standard, auto-shifts to 0V to +10V for positive-only ECM inputs
• Replaces up to 5 separate components previously required for full functionality
• Free iOS and Android app for complete signal customization
• Compatible with Classic Instruments, Auto Meter, Dakota Digital, and GM Connect & Cruise packages

Description

Converting to a TREMEC 6-speed Magnum means wiring three critical electrical functions: the vehicle speed sensor, reverse lockout solenoid, and reverse lights. Traditionally, this required up to five separate components—signal converters, lockout controllers, pigtails, and individual harnesses—all needing integration. The Bowler 3-in-1 Harness consolidates everything into a single pre-wired solution with an intelligent, Bluetooth-configurable controller.

The T56 Magnum and TR6060 place reverse gear dangerously close to 5th gear, creating real potential for accidental engagement at highway speed. The reverse lockout solenoid uses a spring-loaded pin to resist shifts into reverse when de-energized. Most DIY wiring ties the solenoid to the brake light switch—a flawed approach since braking at speed still allows reverse engagement. This harness uses speed-based control like the OE system: the lockout engages above 4 MPH and releases only when the vehicle slows to 0-3 MPH. These thresholds are fully adjustable through the free smartphone app.

The dual speed sensor outputs solve one of the most frustrating wiring challenges in modern builds. Your ECM may need a different signal than your electronic speedometer or cruise control, forcing multiple converters. This harness provides two completely independent outputs—each calibrated separately with any pulse count and ratio you need. The outputs generate a square wave signal from approximately -5V to +5V, and automatically shift to 0V to +10V when your ECM requires a positive-only input. Works seamlessly with popular gauges from Classic Instruments, Auto Meter, and Dakota Digital.

The compact epoxy-sealed controller mounts directly to the VSS output using the existing bolt—no additional mounting hardware or locations needed. Power comes from a switched +12V circuit with ground to the negative battery post or engine block. This harness fits Ford & GM Standard T56 Magnum and Ford TR6060 transmissions. Note: Does not work with 2019 and newer Mustang ECM (Wavelength system).

What's Included

• Epoxy-sealed Bluetooth controller module
• Pre-wired harness with VSS connector
• Reverse lockout solenoid wiring and connector
• Dual vehicle speed sensor output leads (pre-set 40-pulse and 16-pulse)
• Reverse light activation wire
• Protective wiring loom
• Mounting hardware for VSS bolt installation
• Installation instructions and app guide
• Free iOS/Android Bowler app download

Key Features

• Direct-fit snap-in connector mates with the reverse lockout solenoid on all TREMEC T56 6-speed transmissions
• Generous 6-foot wiring length provides flexible routing through tunnels and firewalls
• Protective covering shields wiring from heat, abrasion, and moisture
• Designed for use with MDL's MD-700-0100-2 reverse lockout control module
• Fits Ford and GM T56 applications

Description

The TREMEC T56 utilizes a reverse lockout solenoid to prevent accidental shifts into reverse while attempting to engage 5th gear--a critical safety feature because reverse and 5th are located very close to each other on the shift pattern. When the solenoid isn't energized, spring pressure against the shift rail makes reverse engagement difficult. When powered, the solenoid retracts the pin, allowing smooth entry into reverse. The problem? Classic cars and restomod builds lack the factory PCM logic to control this solenoid, leaving builders to either muscle through the lockout or rig up makeshift solutions.

This 6-foot harness provides the factory-style snap-in connector that mates directly with the T56's reverse lockout solenoid. The extended length gives you the flexibility to route wiring cleanly through the transmission tunnel, up through the firewall, and to your control module location without splicing or extending. The protective covering shields the conductors from exhaust heat, sharp edges, and underbody moisture--critical for a harness that lives in a harsh environment.

This harness is designed to work with MDL's MD-700-0100-2 reverse lockout control module, which monitors vehicle speed via the VSS signal and automatically energizes the solenoid below approximately 5-10 MPH for easy reverse engagement, then de-energizes it at higher speeds to prevent accidental shifts. The result is OEM-style lockout behavior without relying on makeshift brake-light-switch wiring or manual override buttons. Fits all TREMEC T56 6-speed transmissions in Ford and GM applications.

What's Included

• 6-foot reverse lockout solenoid harness with protective covering
• Snap-in connector for TREMEC T56 reverse solenoid

Key Features

• Environmentally-sealed Weather Pack connector resists moisture, extreme temperatures, and corrosive engine bay vapors
• 14 AWG wires with 10-inch leads for flexible installation routing
• Male (tower) and female (shroud) housings with pin-and-socket configuration for secure connection
• 20-amp maximum capacity for reliable 12V electrical operation
• Direct-fit compatibility with GM T56 Magnum, Ford T56 Magnum, and V6 Ford T5 transmissions
• Complete terminal and pigtail assembly - no additional components needed

Description

When swapping to a T56 Magnum or Ford T5 transmission, connecting the reverse light circuit is critical for both legal compliance and safety. This reverse switch harness eliminates the guesswork and provides a clean, factory-grade electrical connection that integrates seamlessly with existing vehicle wiring.

Built around the proven Weather Pack connector system, this harness delivers outstanding reliability in demanding engine bay environments. The pin-and-socket design creates a positive mechanical lock while sealing out moisture, dirt, and corrosive chemical vapors that destroy standard electrical connections over time. Heavy-duty 14 AWG wire handles the full electrical load with headroom to spare, while the 10-inch leads provide flexibility for routing around headers, exhaust components, and other obstacles.

The complete terminal and pigtail assembly plugs directly into GM T56 Magnum, Ford T56 Magnum, and V6 Ford T5 transmissions without modification. On the vehicle side, the Weather Pack connector interfaces cleanly with existing reverse light circuits or aftermarket wiring harnesses. This eliminates the common problems of corroded connections, loose terminals, and failed reverse lights that plague cut-and-splice installations.

What's Included

• Weather Pack male (tower) housing with terminals
• Weather Pack female (shroud) housing with terminals
• 10-inch 14 AWG wire leads (pair)
• Complete pin-and-socket connector assembly

Key Features

• 100% synthetic ATF formulated for TREMEC manual transmissions requiring Dexron III specification
• Resists wear to valve body, gears, clutch plates and synchronizers in normal and severe service
• Friction modifiers promote fast, smooth clutch engagement and shudder-free shifts
• Thermally stable formulation resists heat-related breakdown, evaporation and viscosity loss
• Excellent cold-weather fluidity for reliable shifts during cold starts
• Resists harmful sludge formation with seal conditioning to guard against leaks
• Compatible with T5 World-Class, T45, TR3650, TKX, T56, TR6060 and Magnum transmissions

Description

Modern manual transmissions feature complex internal components -- multiple gear sets, clutch packs and narrow oil passageways -- that demand a steady supply of high-quality fluid to function properly. Without it, wear and sludge formation can lead to reduced performance and even catastrophic failure requiring thousands of dollars in repairs. This AMSOIL Synthetic Automatic Transmission Fluid delivers the Dexron III specification required by TREMEC transmissions while providing protection that exceeds conventional fluids.

In both normal and severe service, this synthetic ATF resists wear to the transmission's valve body, gears, clutch plates and synchronizers, helping your TREMEC achieve long service life. The thermally stable formulation guards against the harmful effects of thermal breakdown in elevated heat conditions, while resisting heat-related evaporation and viscosity loss to keep internal components clean and protected.

Formulated with friction modifiers that promote fast, smooth clutch engagement, this fluid delivers responsive shift feel and efficient torque transfer. It remains fluid in sub-zero temperatures, resisting thickening and flowing quickly for reliable shifts during cold starts. The excellent low-temperature fluidity also maximizes fuel efficiency. Seal conditioners help guard against leaks at input shaft seals and other critical points.

TREMEC TKX transmissions use Dexron III or Dexron III/Mercon specification ATF fluid, and Dexron III ATF is also recommended for T56 and TR3650 models. The T5, TKO and TKX five-speed transmissions require approximately 2.75 quarts, while six-speed Magnum transmissions require approximately 3.45 quarts. TREMEC recommends changing fluid after the initial 500-1000 mile break-in period, then every 30,000 miles thereafter.

What's Included

• One (1) quart bottle AMSOIL Synthetic Automatic Transmission Fluid (Dexron III compatible)

Fiberglass Transmission Tunnel | 1963-1967 Corvette | T56 Magnum 6-Speed Conversion

Key Features

• Specifically engineered for C2 Corvettes with TREMEC T56 Magnum 6-speed conversion
• Raises floor approximately 1 inch to clear the larger transmission case
• Maintains compatibility with original factory shift console
• High-quality small-lot molded fiberglass construction
• Test-fitted to minimum of 3 never-wrecked Corvettes for precise tooling
• Fits 1963-1967 Corvette models
• Manufactured by Dynamic Corvettes
• 100% made in the USA

Description

Converting your C2 Corvette to a modern 6-speed requires more than just bolting in the transmission. The TREMEC T56 Magnum—with its 700 lb-ft torque capacity and robust dimensions—simply will not fit in the factory tunnel designed for smaller 4-speed units. This precision-molded fiberglass tunnel insert solves that clearance problem while maintaining the classic interior aesthetic your '63–'67 deserves.

Dynamic Corvettes builds each tunnel by test-fitting to a minimum of three never-wrecked Corvettes, then averaging the measurements to create the tooling. The result is a high-quality part that raises the floor approximately 1 inch and accommodates the original shift console. The fiberglass construction provides the strength needed to support the transmission tunnel area while remaining lightweight and corrosion-resistant. Each tunnel is molded in small lots to ensure consistent quality and fitment.

Remember that these are 40-plus-year-old vehicles where GM's quality specifications varied significantly from today's standards. Whether you buy this tunnel or a competitor's, bodywork will be required—you will not be able to just scuff and paint. Test fitting is mandatory before any bodywork begins, and adjacent panels may need adjustment for proper fit. A qualified Corvette specialist installation is strongly recommended.

This tunnel is specifically designed for T56 Magnum applications and is 100% made in the USA. The conversion transforms your classic Corvette's drivetrain into a modern performance machine while preserving the original interior layout and console functionality.

What's Included

• Molded fiberglass transmission tunnel insert

Important Notes

TEST FITTING IS REQUIRED. ALTERED PARTS ARE NON-RETURNABLE. 25% RESTOCKING FEE FOR ANY RETURNED PART. NO RETURNS AFTER 30 DAYS.

Warranty: We will repair or replace any defective part provided: (1) You place your claim within 30 days from the time you received your order. (2) Your part is returned at your expense pending verification. (3) The manufacturer cannot be held liable for 3rd party expenses, including but not limited to installation, paint, or storage costs. By continuing you acknowledge and accept these terms.

Installation Video

Click here to watch the installation video

Key Features

• Custom-built steel driveshaft engineered for 1980-1983 Corvette applications
• 31-spline slip yoke for enhanced torque transfer and durability
• 3" OD x .083" wall steel tubing for high-strength construction
• 1310 yoke with bolt-on caps for secure, reliable connection [VERIFY: Product description states 1310, but custom fields indicate 1350 - confirm correct U-joint series]
• High-speed balanced and finished in black paint
• Forged steel slip yoke construction
• Requires vehicle measurements for proper custom fitment
• Made in the USA

Description

Swapping transmissions or building a custom drivetrain in your '80-'83 Corvette demands a driveshaft built to your exact specifications. This custom steel driveshaft delivers the precise fitment and robust construction required for serious performance applications. The 31-spline configuration provides superior engagement and torque capacity over lesser designs, while the forged steel slip yoke ensures durability under demanding conditions.

The 3" OD x .083" wall steel tubing strikes the optimal balance between strength and weight. Steel's inherent toughness handles high torque loads and eliminates the flex issues that can plague aluminum alternatives in high-horsepower applications. The bolt-on cap design at the rear ensures secure retention under hard launches and high-RPM operation, while factory high-speed balancing eliminates vibration across the entire RPM range.

Every driveshaft is application-specific and professionally balanced before shipment. The black paint finish provides corrosion resistance and a clean, finished appearance. Because this is a custom-length driveshaft, you'll need to submit precise measurements from your completed installation using the MDL Driveshaft Build Sheet. Simply download the form, take your measurements with the drivetrain fully assembled, and email the completed sheet to info@moderndriveline.com.

Please Note: Yokes for this application are currently on backorder and may cause extended lead times. Please call 208-453-9800 to confirm current availability before ordering. Made in the USA.

What's Included

• One custom steel driveshaft assembly (3" OD x .083" wall)
• 31-spline forged steel slip yoke
• U-joint with bolt-on caps (rear U-joint size to be determined based on application)
• High-speed balancing
• Black paint finish
• Driveshaft Build Sheet form for measurements
• Lifetime technical support