MDL TREMEC GM TKX 5-Speed | 1953-1967 Corvette | 2.87 First, 0.68 OD | 2” Left Side Shift Rear, Straight Up

Key Features

• 600 lb-ft torque capacity with 7,500 RPM shift capability and 8,000 RPM engine speed rating
• Gearing ratio (2.87, 1.89, 1.28, 1.00, 0.68) - deep overdrive drops highway RPM for improved cruising
• 26-spline input shaft (1-1/8 in. diameter) and 31-spline output shaft for added strength
• Compact end-loaded aluminum case fits most GM tunnels without floor modifications
• Ribbed 3-piece housing (main case, intermediate plate, rear extension) for structural stiffness
• Multi-cone synchronizers with sintered carbon/bronze hybrid rings for smooth high-RPM shifts
• ASTM 4615 special-grade steel gears and shafts with caged needle bearings in all gear positions
• GM Muncie bellhousing bolt pattern - direct swap for 3-speed and 4-speed applications
• GM 0.590-inch pilot tip with 1.375-inch OD throwout bearing guide tube
• Built-in reverse light switch and cruise control safety switch
• Dual speedometer outputs: mechanical 7-tooth Ford gear (adaptable to GM) plus OSS two-wire analog sensor
• 99 lbs dry weight; 2.7-quart fluid capacity
• High-performance short-throw billet aluminum shifter included
• MDL side shift modification with a straight up stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 19.52” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

Early Corvettes demand precision engineering when upgrading to modern overdrive performance. When the TKX leaves the TREMEC factory, the shifter is centered -- and that creates a problem for C1 and C2 Corvettes where the original floor shifters were offset toward the driver for comfortable, easy shifting. MDL's tailstock modifications solve this by relocating the shifter stub to the correct OE position, eliminating the need to cut your floor or modify your center console.

This isn't just a bolt-on shifter -- it's a complete engineering solution. MDL achieves three critical objectives: smooth shifting identical to the unmodified unit, correct OE shifter positioning without console alterations, and rock-solid reliability with a finished appearance that simplifies installation. The custom shifter turret is the smallest offered in the industry for optimal fitment through the factory shifter opening, CNC-machined from aluminum and anodized for corrosion resistance and lightweight integration. Each unit is prepared by hand at MDL's facility to ensure quality and precision.

The TKX foundation delivers superior shift quality through multi-cone synchronizers and hybrid rings made of sintered bronze and carbon, while all gears and shafts are manufactured from special grade steel (ASTM 4615) for increased torque carrying capacity. The three-piece ribbed aluminum housing provides outstanding structural stiffness, and the robust internal three-rail shift system uses steel shift forks. Tapered roller bearings on input, output, and countershafts reduce noise while a caged needle bearing supports the mainshaft.

Compatible with GM Muncie bellhousing bolt patterns using a 7.2-inch input shaft with GM 0.590-inch pilot tip and 1.375-inch OD throwout bearing guide tube. Includes both mechanical and electronic speedometer outputs. Note that C1 Corvettes (1953-1962) require crossmember fabrication. Recommended fluids include AMSOIL ATF or Synchromesh, TREMEC HP-MTF, GM Synchromesh, or Mobil 1 Synthetic ATF. MDL extends the manufacturer's warranty by an extra year with a 1-year grace period.

What's Included

• TREMEC TKX 5-speed transmission (TCET17805) with 2.87/1.89/1.28/1.00/0.68 gear ratios
• High-performance short-throw billet aluminum shifter (2” left side shift front, straight up stub)
• Gaskets for all mating surfaces
• Built-in reverse light switch (left side)
• Built-in cruise control safety switch (right side)
• Mechanical speedometer drive gear (7-tooth Ford pattern, adaptable to GM)
• OSS two-wire analog speedometer sensor
• MDL extended warranty: manufacturer warranty plus 1 additional year with 1-year grace period
• Lifetime technical support

MDL TREMEC GM TKX Road Race 5-Speed | 1953-1967 Corvette | 2.87 First, 0.81 OD | 2” Left Side Shift Rear, No Offset

Key Features

• 600 lb-ft torque capacity with 7,500 RPM shift capability and 8,000 RPM engine speed rating
• Close-ratio gearing (2.87, 1.89, 1.28, 1.00, 0.81) balances strong launches with relaxed highway cruising
• 26-spline input shaft (1-1/8 in. diameter) and 31-spline output shaft for added strength
• Compact end-loaded aluminum case fits most GM tunnels without floor modifications
• Ribbed 3-piece housing (main case, intermediate plate, rear extension) for structural stiffness
• Multi-cone synchronizers with sintered carbon/bronze hybrid rings for smooth high-RPM shifts
• ASTM 4615 special-grade steel gears and shafts with caged needle bearings in all gear positions
• GM Muncie bellhousing bolt pattern - direct swap for 3-speed and 4-speed applications
• GM 0.590-inch pilot tip with 1.375-inch OD throwout bearing guide tube
• Built-in reverse light switch and cruise control safety switch
• Dual speedometer outputs: mechanical 7-tooth Ford gear (adaptable to GM) plus OSS two-wire analog sensor
• 99 lbs dry weight; 2.7-quart fluid capacity
• High-performance short-throw billet aluminum shifter included
• MDL side shift modification with a no offset stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 19.52” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

The stock TKX is an exceptional transmission, but its shifter location doesn't work with the C1 and C2 Corvette's unique interior layout. MDL solves this problem with extensive hand machining and custom component integration that repositions the shifter stub to the factory location - a modification developed through many hours of R&D and unavailable anywhere else. This isn't a bolt-on adapter; it's a comprehensively upgraded transmission that drops into your '53-'67 Corvette with proper shifter placement.

The TREMEC TKX delivers 600 lb-ft of torque capacity with 8,000 RPM capability and a 7,500 RPM shift rating - serious specifications for serious power. The close-ratio gearset (2.87, 1.89, 1.28, 1.00, 0.81 overdrive) keeps engine speed in the powerband through acceleration while the 0.81 fifth gear provides a tighter drop from fourth than the 0.68 option, making it ideal for road racing and spirited street driving where you want usable overdrive without lugging the engine.

Inside, sintered carbon/bronze hybrid triple-cone synchronizers deliver smooth, positive shifts at high RPM, while ASTM 4615 special grade steel gears and shafts handle the increased demands of modern performance engines. Tapered roller bearings on the input, output, and countershafts reduce noise, with caged needle bearings on the mainshaft. The single-piece countershaft increases torque-carrying capacity, and steel shift forks work with the internal three-rail shift system for precise gear selection.

The TKX's compact end-loaded case design provides excellent tunnel clearance compared to older TKO transmissions. The three-piece ribbed aluminum housing (main case, intermediate plate, rear extension) delivers structural stiffness while gaskets at all mating surfaces eliminate fluid leaks. The rear mainshaft support bushing is positioned closer to the gearbox for improved bearing support. Fits C1 1953-1962 and C2 1963-1967 Corvettes. Note: C1 Corvettes require crossmember fabrication. Fluid capacity: 2.7 quarts. Recommended fluids include TREMEC HP-MTF, Dexron III, GM Synchromesh, Amsoil ATF, or Mobil 1 Synthetic ATF.

What's Included

• TREMEC TKX 5-speed transmission (TCET17722) with 2.87/1.89/1.28/1.00/0.81 gear ratios
• High-performance short-throw billet aluminum shifter (2” left side shift rear, no offset)
• Gaskets for all mating surfaces
• Built-in reverse light switch (left side)
• Built-in cruise control safety switch (right side)
• Mechanical speedometer drive gear (7-tooth Ford pattern, adaptable to GM)
• OSS two-wire analog speedometer sensor
• MDL extended warranty: manufacturer warranty plus 1 additional year with 1-year grace period
• Lifetime technical support

MDL TREMEC GM TKX 5-Speed | 1953-1967 Corvette | 3.27 First, 0.72 OD | 2” Left Side Shift Rear, Straight Up No Offset

Key Features

• 600 lb-ft torque capacity with 7,500 RPM shift capability and 8,000 RPM engine speed rating
• Gearing ratio (3.27, 1.98, 1.34, ,1.00, 0.72) - overdrive drops highway RPM for improved cruising
• 26-spline input shaft (1-1/8 in. diameter) and 31-spline output shaft for added strength
• Compact end-loaded aluminum case fits most GM tunnels without floor modifications
• Ribbed 3-piece housing (main case, intermediate plate, rear extension) for structural stiffness
• Multi-cone synchronizers with sintered carbon/bronze hybrid rings for smooth high-RPM shifts
• ASTM 4615 special-grade steel gears and shafts with caged needle bearings in all gear positions
• GM Muncie bellhousing bolt pattern - direct swap for 3-speed and 4-speed applications
• GM 0.590-inch pilot tip with 1.375-inch OD throwout bearing guide tube
• Built-in reverse light switch and cruise control safety switch
• Dual speedometer outputs: mechanical 7-tooth Ford gear (adaptable to GM) plus OSS two-wire analog sensor
• 99 lbs dry weight; 2.7-quart fluid capacity
• High-performance short-throw billet aluminum shifter included
• MDL side shift rear modification with a straight up offset stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 19.52” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

Early Corvettes present a unique challenge for modern 5-speed conversions: the stock shifter position sits precisely where it needs to be for driver ergonomics. Bolt-on solutions that relocate the shifter forward or backward compromise the driving experience you're trying to improve. MDL solves this by precision-machining each TREMEC TKX to bring the shifter stub up in the original equipment position - creating an integrated transmission, not a transmission with a bolted-on adapter. This modification is performed entirely in-house at MDL's Caldwell, Idaho facility and is not available through TREMEC or any other distributor.

The foundation is TREMEC's latest TKX architecture, designed from the ground up for aftermarket performance applications. The compact end-loaded case features a ribbed 3-piece aluminum housing that delivers structural stiffness while fitting inside the Corvette's tight transmission tunnel. Multi-cone synchronizers with sintered carbon/bronze hybrid rings deliver superior shiftability at high RPM, while oversized gear widths and ASTM 4615 special-grade steel gears and shafts provide the durability to handle engines making over 400 horsepower. The single-piece countershaft and tapered roller bearings on input, output, and counter shafts reduce noise while improving torque capacity.

This wide-ratio configuration delivers aggressive acceleration with the deep 3.27 first gear, then stretches highway cruising with the 0.72 overdrive fifth. The GM Muncie bolt pattern mates directly to factory 3- and 4-speed bellhousings, and the 0.590-inch pilot tip with 1.375-inch OD throwout bearing guide tube maintains compatibility with mechanical clutch systems. Fits C1 Corvettes 1953-1962 and C2 Corvettes 1963-1967. Note: C1 installations require custom crossmember fabrication due to chassis differences. Made in the USA.

What's Included

• TREMEC TKX 5-speed transmission (TCET17805) with 3.27, 1.98, 1.34, 1.00, 0.72 gear ratios
• High-performance short-throw billet aluminum shifter (2” left side shift rear, straight up no offset stub)
• Gaskets for all mating surfaces
• Built-in reverse light switch (left side)
• Built-in cruise control safety switch (right side)
• Mechanical speedometer drive gear (7-tooth Ford pattern, adaptable to GM)
• OSS two-wire analog speedometer sensor
• MDL extended warranty: manufacturer warranty plus 1 additional year with 1-year grace period
• Lifetime technical support

Key Features

• Designed exclusively for hydraulic release/throwout bearings - no fork pivot or mechanical linkage provisions
• Fits Chevy LS (Gen III/IV), Gen-V LT (2013+), Small Block, and Big Block engines
• Connects to TREMEC TKO, TKX, Muncie, Saginaw, Borg Warner T10, and most GM-pattern 4-speeds
• Lightweight cast aluminum construction mirrors OE bellhousing design
• 4.684-inch transmission bore diameter with 6.45-inch depth
• 11-inch maximum clutch diameter - compatible with 168-tooth flywheels
• Non-SFI rated - ideal for street builds under 500hp where SFI certification is not required
• Grade 8/10.9 hardware included for both engine and transmission mounting
• No adapters required - direct bolt-on to all compatible engines and transmissions
• Works with OE starters, flywheels, and accessories
• Made in the USA

Description

When you're running a hydraulic release bearing and don't need the weight or expense of an SFI-rated steel bellhousing, this Lakewood aluminum unit delivers the clean, adapter-free connection your Chevy drivetrain deserves. Designed specifically for hydraulic throwout bearings, this bellhousing eliminates the fork pivot and mechanical linkage provisions found on dual-purpose bells - giving you a cleaner package optimized for modern hydraulic clutch actuation.

The cast aluminum construction matches OE bellhousing geometry with a 4.684-inch transmission bore diameter and 6.45-inch depth, ensuring proper clutch release geometry and starter clearance. The 2.125 x 3.30-inch fork opening accommodates hydraulic slave cylinder installations while the included grommet seals off the hydraulic line passage from road debris. Maximum recommended clutch diameter is 11 inches with near-stock style pressure plates for proper clearance.

Compatibility spans the full range of GM V8 powerplants: Chevy LS (Gen III/IV), Gen-V LT (2013 and newer), Small Block, and Big Block engines all bolt up directly. On the transmission side, the standard GM bolt pattern accepts TREMEC TKO-500, TKO-600, TKX, Muncie, Saginaw, Borg Warner T10, and most 4-speed transmissions. Note: Early LT-series engines prior to Generation 5 (pre-2013) are not compatible.

For street cruising applications under 500hp, aluminum bellhousings provide adequate strength while saving weight. If you're racing or pushing beyond 500hp, consider upgrading to an SFI-rated steel bellhousing for added safety. Match your starter tooth count (153 or 168) to your flywheel for proper engagement. Made in the USA with Grade 8/10.9 hardware included for both engine and transmission attachment.

Kit Includes

• Lakewood cast aluminum bellhousing (hydraulic release configuration)
• Stamped steel dust cover
• Hydraulic line grommet
• Grade 8/10.9 engine mounting hardware
• Grade 8/10.9 transmission mounting hardware
• Lifetime tech support: 208-453-9800

Key Features

• SFI 6.1 certified - required by most sanctioning bodies for cars running 11.49 or faster in the quarter mile
• Connects GM LS engines to transmissions using the GM Muncie bolt pattern: TKO-500, TKO-600, TKX, Muncie, Saginaw, Borg Warner T10, Jerico, and T5
• Also compatible with late-model LT1 and LT4 engines
• Spun cone construction - not rolled or stamped - delivers exceptional dimensional stability
• High-grade steel work-hardens to over 80,000 PSI strength
• More than twice the strength of other steel bellhousings on the market
• Accommodates 153-tooth or 168-tooth flywheels with up to 11-inch clutch
• 4.688-inch transmission bore diameter with 6.0-inch bellhousing height
• Compatible with mechanical (standard left-hand fork) or hydraulic clutch release systems
• Patent covers 16 points of bellhousing design and manufacturing process
• Uses OE-style starter location
• 100% manufactured in the USA

Description

When you need bulletproof reliability between your LS engine and GM transmission, this QuickTime steel bellhousing delivers the strength and precision that inferior stamped housings simply cannot match. QuickTime's proprietary spun cone construction - not rolled or stamped like lesser bellhousings - creates a housing that maintains exceptional dimensional stability and accuracy under extreme loads. This keeps your engine and transmission in perfect alignment through the entire RPM range, eliminating accelerated drivetrain wear caused by bellhousing flex.

Built from high-grade steel that work-hardens to over 80,000 PSI, this bellhousing delivers more than twice the strength of any other steel bellhousing on the market. The patented design features 16 patented elements covering critical aspects of bellhousing engineering. SFI 6.1 certification meets the strict safety requirements for drag racing and circle track competition - mandatory for cars running 11.49 or faster in the quarter mile.

This bellhousing connects GM LS engines to transmissions utilizing the GM Muncie bolt pattern, including TREMEC TKO-500, TKO-600, TKX, Muncie, Saginaw, Borg Warner T10, Jerico, and T5 transmissions. It also works with late-model LT1 and LT4 engines. The versatile design handles both mechanical (standard left-hand fork) and hydraulic clutch systems. Sized to accommodate 153-tooth or 168-tooth flywheels with clutches up to 11 inches in diameter.

This is a universal-fit bellhousing - not vehicle-specific - making it ideal for custom builds, engine swaps, and race applications. Proudly manufactured 100% in the United States with QuickTime's industry-leading quality standards.

What's Included

• QuickTime RM-6036 steel bellhousing with spun cone construction
• Full engine block plate
• Pivot ball
• Grade 8 mounting hardware
• SFI 6.1 certification

Note: Transmission mounting bolts and throwout bearing not included. Uses stock shifter fork.

Install Hardware Kit | LS and Late Model LT1/LT4 Engine to TKX | Aluminum Bellhousing

Key Features

• Complete bolt set for LS and late model LS-based LT1/LT4 engines with aluminum bellhousing to TKX
• Includes both bellhousing-to-engine and transmission-to-bellhousing fasteners
• Eliminates parts-counter guesswork with application-specific hardware
• Designed specifically for aluminum bellhousing installations
• Note: For early LT engines, use HWkit-TKX Chevy AL instead

Description

Bolting a TREMEC TKX to an LS or late model LS-based LT1/LT4 engine with an aluminum bellhousing requires specific hardware that the factory never intended to supply. This MDL install hardware kit provides the correct fasteners for both the bellhousing-to-engine block and transmission-to-bellhousing connections, eliminating trips to the hardware store and the headache of sourcing individual bolts with the right thread pitch and length.

The TKX uses a GM-style bolt pattern that shares commonality with classic small-block Chevys, but aluminum bellhousings demand specific bolt lengths to properly engage the softer material without bottoming out or stripping threads. This kit is matched to the dimensional requirements of LS-series (Gen III/IV) and late model LS-based LT1/LT4 (Gen V) engines when paired with aftermarket aluminum bellhousings.

Important: This hardware kit is designed specifically for late model LS-based LT1/LT4 engines. If you're running an early LT engine (1992-1997 LT1/LT4), you'll need the HWkit-TKX Chevy AL kit instead. The bolt patterns are similar but the hardware specifications differ between generations.

Whether you're building a resto-mod with an LS swap or adding a TKX to a late-model Corvette or Camaro powerplant, this kit ensures you have the right fasteners from the start. One less variable to troubleshoot during your transmission installation.

What's Included

• Bellhousing-to-engine block bolts for LS/late model LT1/LT4
• Transmission-to-bellhousing bolts for TKX
• Required washers for proper load distribution

Key Features

• Steel bellhousing-specific hardware kit -- correct bolt lengths for thicker Lakewood and QuickTime steel housings
• Grade 8 fasteners for high-torque, high-vibration drivetrain applications
• Hardened washers distribute clamping loads evenly across mounting surfaces
• Eliminates hardware store guesswork -- one kit, all the fasteners you need
• Torque specification: 35 ft-lbs for transmission-to-bellhousing bolts

Description

Steel bellhousings require different hardware than their aluminum counterparts. The thicker steel construction of Lakewood and QuickTime scatter shields demands specific bolt lengths that you won't find at the local hardware store -- and using the wrong fasteners means either insufficient thread engagement or bolts that bottom out before clamping. This hardware kit solves that problem with precision-selected Grade 8 bolts sized specifically for steel bellhousing applications.

The kit includes everything needed to secure your TREMEC TKX transmission to a GM-pattern steel bellhousing on small block or big block Chevy applications. Grade 8 fasteners deliver the strength required for high-torque drivetrains, while the included hardened washers prevent fastener galling and distribute clamping loads evenly across the mounting flange. Torque all transmission-to-bellhousing bolts to 35 ft-lbs for proper retention.

The GM TKX uses the same Muncie/Richmond 4-speed bolt pattern that's been standard on GM manual transmissions for decades, making bellhousing selection straightforward. This kit pairs with steel bellhousings designed for that pattern -- the thicker steel construction provides added safety in high-horsepower applications where an SFI-rated scatter shield is required or preferred.

What's Included

• Grade 8 transmission-to-bellhousing bolts (steel bellhousing length)
• Hardened steel 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

Manual Clutch Pedal Conversion Kit | 1968-1982 Corvette C3

Key Features

• Complete swing-mounted clutch pedal assembly for all 1968-1982 C3 Corvettes
• Solves the most challenging part of any automatic-to-manual transmission conversion
• Includes clutch cross shaft (Z-bar) with pivots, bushings, and mounting hardware
• Factory-style clutch fork and linkage rods with adjusters and clips
• Eliminates junkyard hunting for worn or mismatched 50-year-old pedal components
• Compatible with small-block and big-block applications

Description

Converting your C3 Corvette from automatic to manual transmission? The clutch pedal assembly is often the most difficult and time-consuming part of the swap. Accessing the under-dash area in a C3 is notoriously tight, and sourcing complete, matching pedal components from donor cars typically means dealing with worn bushings, rusted parts, and mismatched pieces from different model years. This complete manual clutch pedal conversion kit eliminates that frustration by providing everything you need in one package.

The kit centers on a swing-mounted clutch pedal assembly that bolts into the factory pedal bracket location. The included Z-bar (clutch cross shaft) mounts to the frame with the provided pivots and hardware, delivering proper clutch throw geometry for smooth, consistent pedal feel. Factory-style linkage rods with adjusters allow you to dial in the correct free play and engagement point for your specific clutch setup.

This changeover kit covers all 1968-1982 C3 Corvettes - coupes, convertibles, Stingrays, and special editions alike. It provides the essential pedal and linkage components for the conversion but does not include the transmission, bellhousing, clutch assembly, or console shift plate. That flexibility lets you choose your preferred drivetrain setup, whether you're restoring to a factory Muncie 4-speed or upgrading to a modern TREMEC overdrive transmission. This is not an in-stock item - please call 208-453-9800 for availability.

What's Included

• Manual clutch pedal assembly with mounting bracket
• Clutch cross shaft (Z-bar) with pivots and mounting hardware
• Clutch fork
• Push/pull linkage rods with adjusters
• Bushings and hardware pack
• Mounting clips and fasteners

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

• 1.094" outside diameter x 0.590" inside diameter - precision-sized for Chevy small block, big block, and GM Gen 6 V8 crankshafts
• 0.500" width for proper crankshaft engagement depth
• Oilite bronze construction - sintered bronze impregnated with oil for self-lubrication throughout service life
• No external greasing required - grease actually seals the pores and reduces lubrication effectiveness
• OEM-specification dimensions ensure proper fit and transmission input shaft support
• Essential for manual transmission swaps using motor mounts or torque plates between engine and bellhousing

Description

A worn or incorrectly sized pilot bushing causes input shaft wobble, accelerates clutch disc wear, and can damage transmission internals. This heavy-duty Oilite bronze pilot bushing provides the precise crankshaft-to-input shaft alignment your Chevy V8 drivetrain demands. The 1.094" OD and 0.590" ID dimensions match OEM specifications for small block, big block, and GM Gen 6 engines originally equipped for manual transmission use.

Unlike standard bronze bushings that require periodic lubrication, this bushing is manufactured from sintered Oilite bronze - a porous material impregnated with oil during production. As the transmission input shaft rotates and generates heat, oil seeps from the microscopic pores to create a continuous lubricating film. When the shaft stops, the bushing reabsorbs the oil. This self-lubricating design eliminates the need for grease application, which actually seals the pores and defeats the purpose of the oil-impregnated construction.

Use this pilot bushing when your drivetrain setup includes motor mounts or torque plates between the engine and bellhousing. The 0.500" width provides proper engagement depth in the crankshaft bore while fully supporting the transmission input shaft snout. For easiest installation, freeze the bushing before pressing it into the crankshaft pilot bore - the thermal contraction eases the interference fit. To remove an old bushing, pack the center cavity with bread and drive out with a punch; this method is far less messy than the traditional grease-pack approach.

This is a wear item that should be replaced with every clutch service, even if it appears serviceable. A fresh bushing costs far less than the transmission teardown required to fix damage from a worn pilot support.

What's Included

• (1) Oilite bronze pilot bushing, oil-impregnated
• Dimensions: 1.094" OD x 0.590" ID x 0.500" width

Key Features

• Direct bolt-in installation to factory mounting points -- no cutting or welding required
• Energy Suspension polyurethane transmission mount included for superior torque resistance
• Designed for 1968-1979 C3 Corvettes originally equipped with 4-speed manual transmissions
• Compatible with TREMEC TKO-500, TKO-600, and TKX 5-speed transmissions
• Supports factory small block Chevy, big block Chevy, and LS engine configurations
• Polyurethane mount resists oil, coolant, and road contaminants that degrade rubber

Description

Swapping a modern TREMEC 5-speed into your C3 Corvette shouldn't mean custom fabrication and guesswork. This Bowler Performance crossmember delivers a clean bolt-in solution for '68-'79 Corvettes, mounting directly to your factory crossmember locations and providing the solid foundation your TKO or TKX transmission needs.

The included Energy Suspension polyurethane mount replaces soft factory rubber with torque-resisting polyurethane. While rubber mounts flex and distort under high-horsepower loads -- soaking up torque that should be going to the rear wheels -- polyurethane maintains its shape under stress. The result is quicker throttle response, reduced wheel hop, and consistent drivetrain alignment. Unlike rubber, the polyurethane compound won't crack or degrade from exposure to oil, coolant, or road salt.

Engineered specifically for C3 Corvettes that originally came with a 4-speed manual transmission, this crossmember correctly relocates the transmission mount for TREMEC TKO-500, TKO-600, and TKX applications. It supports small block, big block, and LS engine swaps with factory engine placement. Note that if your engine is set back from the stock position, modifications may be necessary.

Installation is straightforward -- the crossmember bolts to your stock mounting points using the included hardware. No cutting, no welding, no fabrication headaches.

What's Included

• Bowler Performance crossmember assembly
• Energy Suspension polyurethane transmission mount
• Mounting hardware

Key Features

• Authentic 1968 Corvette OEM appearance with polished chrome knob
• 9-inch lever length for proper hand position and shift throw
• 7/8-inch on-center mounting holes for direct bolt-on installation
• Steel construction with chrome finish for durability and period-correct aesthetics
• Compatible with TKX, TKO, and T56 TREMEC transmissions
• Non-functional reverse lockout maintains classic visual authenticity

Description

Swapping a modern TREMEC into your C3 Corvette shouldn't mean sacrificing the factory look. This 1968 OEM appearance shift lever delivers the correct period aesthetic while mounting directly to TKX, TKO, and T56 shifter bases - no cutting, no welding, no compromises on authenticity.

The steel lever measures 9 inches in length, positioning your hand exactly where the factory engineers intended for quick, confident shifts. The 7/8-inch on-center mounting holes match standard TREMEC shifter bases, so installation is straightforward bolt-on work. The chrome knob completes the period-correct appearance, matching the bright interior trim found in '68 Stingrays.

One design note for the purists: the reverse lockout is present for visual authenticity but is non-functional with modern TREMEC transmissions. This preserves the classic appearance while avoiding interference with contemporary shifting mechanisms. For builders who want modern strength and shift quality under the hood without betraying the vintage interior aesthetic, this lever bridges the gap between old-school style and new-school performance.

What's Included

• Steel shift lever with chrome finish (9-inch length)
• Chrome shift knob

Key Features

• Durable rubber construction withstands heat, vibration, and transmission fluids
• Includes seal for complete protection against fluid migration and debris entry
• OEM-style reproduction of GM #3919731
• Fits all 1968-1981 C3 Corvette 3-speed and 4-speed manual transmissions
• Compatible with TREMEC transmission conversions
• Mounts directly to floor pan to seal transmission tunnel

Description

A worn or ill-fitting lower shifter seal allows transmission fluid to creep onto carpet and floor mats while dust, moisture, and debris infiltrate the shifter linkage. Over time, this leads to damp interiors, musty odors, stiffer shifts, and more frequent maintenance. This rubber shifter boot with seal solves that problem by creating a proper barrier between your transmission tunnel and the cabin.

Designed for 3-speed and 4-speed manual transmissions as well as TREMEC conversions, this boot mounts directly to the floor pan to block heat, air, and moisture from entering the interior. The durable rubber construction maintains flexibility throughout extreme temperature swings while standing up to transmission fluids and the constant vibration of the drivetrain. The included seal ensures complete protection and restores original seal integrity.

This OEM-style reproduction replicates GM part #3919731 for exact fitment on all 1968-1981 C3 Corvettes equipped with a manual transmission. Whether you're running the factory Muncie or Saginaw 4-speed, an original 3-speed, or have upgraded to a modern TREMEC, this boot delivers the correct seal contact and factory function your Corvette demands.

What's Included

• Rubber shifter boot
• Seal

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

• 16-pulse Hall effect sensor delivers 16,000 pulses-per-mile output for accurate electronic speedometer calibration
• Direct bolt-in fitment for Ford gear drive TKO and TKX transmissions
• Three-wire design with included 10-foot pigtail harness for flexible routing and clean signal transmission
• Allen-head mounting bolt provides body clearance in tight transmission tunnel applications
• Uses standard T5 driven speedometer gears - no adapter required for low-profile installation.
• Compatible with Ford T-5, T-45, TR3550, 5-speed and 6-speed Ford T-56, and Magnum transmissions (requires Ford-driven speedometer gears and retainer clip)

Description

Swapping to a TKO or TKX five-speed means ditching the factory mechanical speedometer cable - but your electronic dash, engine management system, or cruise control still needs a reliable speed signal. This digital speedometer sensor plugs directly into the Ford-style VSS port on your TREMEC transmission's passenger-side tail housing and delivers a clean 16-pulse signal that works with the industry-standard 16,000 pulses-per-mile input most aftermarket speedometers and ECUs expect.

The three-wire Hall effect design provides a stable square wave output that won't degrade over long wire runs. The included 10-foot pigtail harness gives you plenty of length to route wiring cleanly through the tunnel and up to your dash or ECU, with a three-pin connector for easy hookup. The Allen-head mounting bolt is a thoughtful detail - standard hex-head fasteners can interfere with the sensor body in tight quarters, so this design ensures proper installation without clearance issues.

Beyond the TKO and TKX, this sensor also works with T-5z 5-speed and 6-speed Magnum transmissions when paired with Ford-driven speedometer gears and a retainer clip. Note that it does not fit Super Magnum, Magnum XL, or Magnum F transmissions - those use a different VSS configuration. If you're running a Dakota Digital, Classic Instruments, Auto Meter, or other programmable electronic speedometer, this sensor's 16,000 PPM output drops right into their standard calibration range.

What's Included

• 16-pulse digital speedometer sensor with three-pin connector
• 10-foot three-wire pigtail harness
• Allen-head mounting bolt

Key Features

• Direct-fit connector for Ford T5, all TKO variants, TKX, and T56 transmissions equipped with two-prong round body reverse switches
• Plug-and-play installation eliminates splicing, cutting, and custom wiring
• Factory-style connector ensures secure electrical contact for reliable backup light operation
• Does not fit Magnum or Magnum XL transmissions (different switch configuration)

Product Overview

Missing or damaged reverse light wiring is a common headache during TREMEC swaps and classic Ford restorations. This replacement harness provides the correct connector to mate with the two-prong round body reverse switch found on Ford T5, TKO, TKO-500, TKO-600, TKX, and T56 manual transmissions. No more hunting through junkyard harnesses or fabricating your own pigtail - just plug in and wire to your vehicle's backup light circuit.

The connector is engineered to match the OEM switch terminal configuration, providing a secure push-on fit that won't vibrate loose. This is a direct replacement for damaged factory harnesses, giving you a clean, professional connection point for your reverse light circuit. Wire colors may require matching to your specific vehicle's backup light wiring.

Note: This harness is specifically designed for transmissions using the two-prong round body style reverse switch. It is not compatible with T56 Magnum or Magnum XL transmissions, which utilize a different switch and connector configuration.

Kit Includes

• Reverse switch wiring harness with two-prong connector

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)

Key Features

• 31-spline forged steel slip yoke with removable caps - matches TKO/TKX output shaft
• 1310-series U-joints: 1.062" cap diameter, 3.219" span
• 2.5" steel tube construction for maximum ground clearance in low-slung C1 chassis
• High-speed balanced for smooth, vibration-free operation at all RPM ranges
• Application-specific fitment for 1956-1962 Corvette TKO/TKX conversions
• Custom-built to your vehicle's exact measurements
• Made in the USA

Description

Swapping a TKO or TKX five-speed into your '56-'62 Corvette means dealing with a transmission output that's nothing like the original powerglide or three-speed manual. Both the TKO and TKX feature a 31-spline output shaft, requiring a properly matched slip yoke and purpose-built driveshaft to handle the transmission's 600 lb-ft torque capacity while fitting the C1's notoriously tight tunnel and low ground clearance.

This steel driveshaft solves the conversion challenge with a 31-spline forged steel slip yoke featuring removable caps for straightforward installation and future service access. The 2.5" diameter steel tube strikes the ideal balance between strength and clearance - critical in first-generation Corvettes where every fraction of an inch matters. The 1310-series rear U-joint (1.062" cap diameter, 3.219" span) provides reliable power transfer while maintaining compatibility with most differential yoke configurations found in C1 Corvettes.

Every driveshaft is professionally built using the latest manufacturing technologies and high-speed balanced to eliminate vibration throughout the RPM range. Unlike off-the-shelf universal shafts, this driveshaft is custom-built to your vehicle's exact measurements after you complete the transmission installation - ensuring precise length and proper operating angles for your specific combination.

This is an application-specific driveshaft requiring custom measurements from your completed TKO/TKX conversion. Submit the completed Driveshaft Build Sheet form to info@moderndriveline.com after your transmission is installed. Made in the USA with lifetime technical support from MDL's drivetrain specialists.

What's Included

• Custom-length steel driveshaft assembly with 2.5" diameter tube
• 31-spline forged steel slip yoke with removable caps
• 1310-series rear U-joint (1.062" cap diameter)
• High-speed balancing
• Black paint finish
• Lifetime technical support