Key Features

• TREMEC TUKT12021 Magnum XL 6-speed transmission with 700 lb-ft torque capacity and 7,800 RPM rating
• Wide-ratio double overdrive gearing: 2.97, 2.10, 1.46, 1.00, 0.80, 0.63 for aggressive launches and fuel-saving highway cruising
• Triple cone synchronizers on gears 1-4, double cone synchronizers on gears 5-6 and reverse for smooth high-RPM shifts
• QuickTime SFI 6.1 certified steel scatterproof bellhousing with block plate included
• Extended-length tail section eliminates semi-remote shifter for direct-mounted, precise shift feel
• 26-spline input shaft and 31-spline output shaft for high-performance clutch and driveshaft compatibility
• Swap-specific steel crossmember and OE-quality transmission mount for direct-fit installation
• Direct shift aluminum shifter with black TREMEC shift ball for smooth, positive shift action
• Analog electric speedometer sensor eliminates cable drive
• Reuses OEM hydraulic clutch release system for simplified installation
• MDL extended warranty (one extra year from date of install) plus lifetime technical support

Description

Your MT-82 is the weak link in your S197 or S550 Mustang build. Every serious builder knows it. This complete TREMEC Magnum XL conversion kit delivers the bulletproof strength, precision shifting, and double overdrive gearing that your modular V8 deserves. Modern Driveline was the first to install a Magnum XL into both V8 and V6 Mustangs and brings the industry's most in-depth knowledge and complete parts lineup to your build.

The Magnum XL builds on TREMEC's proven Magnum 6-speed architecture with refinements specifically engineered for late-model Mustangs. The extended-length tail section eliminates the clumsy semi-remote shifter found in factory 5- and 6-speed applications, replacing it with a rigid direct-shift design that delivers crisp, low-effort gear changes. Triple cone synchronizers on gears 1-4 and double cone synchronizers on gears 5-6 and reverse handle engines approaching 8,000 RPM straight out of the box. With 700 lb-ft of torque capacity and an 85mm center distance, this transmission matches or exceeds the output of even heavily modified Coyote and modular builds.

The 2.97 first gear provides aggressive launches while the 0.80 and 0.63 double overdrive ratios deliver relaxed highway cruising with reduced engine wear and improved fuel economy. This wide-ratio gearset is ideal for street-driven performance cars and daily drivers that still see occasional track duty. The included SFI 6.1 certified QuickTime steel bellhousing bolts directly to Ford modular V8 engines, while the swap-specific steel crossmember and OE-quality transmission mount ensure direct-fit installation with no fabrication required.

Designed for 2005-2018 S197 and S550 Mustangs with Ford modular V8 engines. Installation requires a 26-spline clutch and one-piece driveshaft (sold separately). Reuses OEM hydraulic clutch release system. Some applications may require speedometer recalibration via ECU tuning or a plug-in signal converter. MDL extends TREMEC's factory warranty by one additional year from the date of installation and backs every kit with lifetime technical support. Made in the USA.

Kit Includes

• TREMEC TUKT12021 Magnum XL 6-speed transmission (gear ratios: 2.97, 2.10, 1.46, 1.00, 0.80, 0.63, 2.90 reverse)
• QuickTime SFI 6.1 certified steel scatterproof bellhousing with block plate
• Swap-specific steel crossmember
• OE-quality transmission mount
• Direct shift aluminum shifter with black TREMEC shift ball
• Analog electric speedometer sensor with 7-tooth internal drive gear
• MDL extended warranty (TREMEC 1-year warranty plus one additional year from install date)
• MDL lifetime technical support

Key Features

• 700 lb-ft torque capacity with substantially increased gear face widths and 2-piece laser-beam welded construction
• 2.66 close-ratio gear set (2.66, 1.78, 1.30, 1.00, .80, .63) with double overdrive for optimal power delivery and highway cruising
• SFI 6.1 certified steel scatterproof bellhousing with enclosure plate for high-performance safety standards
• Extended-length tail section with rigid direct-mount aluminum shifter eliminates semi-remote shifter binding
• Triple cone synchronizers on gears 1-4, double cone synchronizers on gears 5-6 and reverse for crisp shifts up to 7,800 RPM
• 26-spline input shaft, 31-spline output shaft
• Swap-specific steel crossmember and OE-quality rubber transmission mount included
• Reuses OEM hydraulic clutch release system for simplified installation
• Electronic analog speedometer sensor output
• Shifter position 34.9" from front of bellhousing; mount position 28.1" from front
• Extended 2-year warranty (1-year TREMEC factory warranty plus 1-year MDL extension from date of installation)

Description

The factory MT-82 and TR-3650 transmissions in 2005-2019 Mustangs are notorious weak points that fail under power and deliver vague, rubbery shift feel through their semi-remote shifter setups. The TREMEC Magnum XL 6-speed is built from the proven OEM TR-6060 foundation and engineered specifically to replace these weak factory units when serious performance improvements are demanded. Modern Driveline was the first company to install a Magnum XL into both V8 and V6 Mustangs and offers the most comprehensive knowledge and parts in the industry.

The defining upgrade is the extended-length tail section that positions the shifter directly on the transmission case. A rigid direct-mount aluminum shifter delivers vastly improved performance and lightning-quick shifts compared to the binding-prone factory semi-remote setup. The 2.66 close-ratio gear set delivers optimized spacing for high-horsepower builds, with double overdrive ratios (.80 fifth and .63 sixth) that keep forced induction engines in their powerband while providing highway-friendly cruising RPMs.

Engineering highlights include 85mm center distance gearing with substantially increased face widths and 2-piece laser-beam welded construction for greater control of tooth angles, pitch, and alignment. Triple cone synchronizers on gears 1-4 and double cone synchronizers on gears 5-6 plus reverse enable accurate, smooth high-RPM shifts. The included SFI 6.1 certified steel scatterproof bellhousing meets safety standards for competition use, while the swap-specific crossmember and OE-quality rubber transmission mount ensure direct-fit installation.

This complete swap kit fits 2005-2019 S197 and S550 Mustangs and requires a 26-spline clutch disc and one-piece driveshaft (sold separately). The kit reuses the OEM hydraulic clutch release system for simplified installation. 2005-2010 applications are direct plug-and-play for speedometer function, while 2011+ models may require speedometer recalibration via ECU tuning or signal converter. Uses Dexron III ATF. MDL extends the manufacturer's warranty for an additional year from the date of installation, and all products are backed by lifetime technical support.

Kit Includes

• TREMEC Magnum XL 6-speed transmission (TUET16901) with 2.66/1.78/1.30/1.00/.80/.63 gear ratios
• SFI 6.1 certified steel scatterproof bellhousing with enclosure plate
• Swap-specific steel crossmember
• OE-quality rubber transmission mount
• Direct-mount aluminum shifter with isolated shifter and shift ball
• Electronic analog speedometer sensor
• 7-tooth internal speedometer drive gear
• Installation hardware
• Lifetime technical support

Key Features

• Steel-backed organic facing rated at 450 ft-lb torque capacity for performance street applications
• 26-spline 1-1/8" hub designed for TREMEC TKX, TKO, and T56 Magnum transmission swaps
• Ford 11" metric 10mm diaphragm pressure plate with hydraulic release finger profile
• Hand-assembled in-house with precision tolerances and quality-controlled inspection
• Sprung hub design for smooth engagement and reduced drivetrain shock
• Made in the USA with 1-year warranty coverage

Description

Swapping a TREMEC 5- or 6-speed into your S197 or S550 Mustang means leaving behind the factory 10-spline clutch setup. This Superior Series steel-backed organic clutch kit delivers the 26-spline hub configuration and 450 ft-lb torque capacity your modern manual swap demands, with smooth engagement characteristics suited for aggressive street driving.

The steel backing plate construction provides superior heat dissipation compared to standard organic discs, extending clutch life under spirited driving conditions. The organic facing material maintains the progressive engagement feel that makes daily driving livable while still holding up to moderate power adders. Each clutch disc is hand-assembled in-house at MDL, with precision tolerances verified before shipping to ensure flawless operation straight out of the box.

The included diaphragm pressure plate features hydraulic release finger geometry optimized for modern slave cylinder actuation systems. The 11" metric 10mm bolt pattern provides the larger friction surface needed for increased holding power while maintaining compatibility with factory and aftermarket flywheels designed for this pattern. The sprung hub design absorbs drivetrain shock and smooths gear engagement.

This kit fits 4.6L and 5.0L Coyote engines in 2005-2025 Mustangs. Note that no throwout bearing is included; this kit is designed for hydraulic release systems using an internal or external slave cylinder. All MDL Superior clutches are Performance Proven through rigorous racing applications. Made in the USA.

What's Included

• Ford 11" metric 10mm pattern diaphragm pressure plate with hydraulic release finger profile
• 26-spline 1-1/8" steel-backed organic clutch disc with sprung hub
• Pilot bearing
• Clutch alignment tool
• Lifetime technical support

Key Features

• 450 ft-lb torque rating - handles serious street performance builds
• Kevlar/steel backed organic facings - smooth engagement with enhanced durability
• Ford 11" metric 10mm pattern diaphragm pressure plate with clutch finger profile for hydraulic release
• 26-spline x 1-1/8" sprung hub disk - fits stock and upgraded transmissions
• Hand-built in-house with double-checked tolerances before shipping
• 1-year free-from-defect warranty
• Made in the USA

Description

Built for 2005-up Mustang owners who demand more than factory clutch performance, this Superior clutch set delivers the grip and longevity needed for modified 4.6L and 5.0L Coyote engines. The Kevlar facing paired with steel-backed organic material creates the ideal balance - aggressive enough to handle 450 ft-lb of torque yet smooth enough for daily driving without the harshness of a full race setup.

The engineering centers on the diaphragm pressure plate's clutch finger profile specifically designed for hydraulic release systems used in S197 and S550 Mustangs. This design ensures consistent clamp load and clean engagement across the full operating range, eliminating the binding and grabbiness common with generic aftermarket clutches that weren't designed around hydraulic actuation.

Each clutch disk is hand-built at MDL's facility in Caldwell, Idaho, and inspected twice for exacting tolerances before it goes in the box. The sprung hub design absorbs driveline shock and reduces gear rattle, keeping the clutch streetable while you're making power. This Performance Street Plus rated clutch handles bolt-ons, aggressive tuning, and spirited driving without compromise.

The 26-spline x 1-1/8" hub works with factory MT-82 transmissions as well as popular aftermarket swaps like the TKX, TKO, and T56 Magnum. Proudly made in the USA and backed by MDL's 1-year warranty.

What's Included

• Ford 11" metric 10mm pattern diaphragm pressure plate (hydraulic release finger profile)
• 26-spline x 1-1/8" clutch disk with Kevlar/steel backed organic facings and sprung hub
• Pilot bearing
• Clutch alignment tool
• 1-year free-from-defect warranty

Note: No throwout bearing is included with this kit.

Key Features

• 550 ft-lbs torque capacity - engineered for performance street and open track applications
• Kevlar/Kevlar friction surfaces - smooth engagement with exceptional grip and heat resistance
• 26-spline x 1-1/8" input shaft compatibility - matches 2005-up Mustang transmissions
• 11" metric bolt pattern with 10mm hardware - direct fit for Ford modular engines with hydraulic actuation
• Sprung hub design - dampens drivetrain shock and reduces gear rattle
• Diaphragm pressure plate - consistent clamping force across the entire friction surface
• Hand-assembled in-house at MDL - double-riveted construction ensures precision and quality
• Performance Proven tested - validated through rigorous on-track and off-track racing
• 1-year defect-free warranty - backed by MDL commitment to quality

Description

When your 2005-up Mustang needs reliable power transfer for street performance or open track duty, this MDL Superior clutch kit delivers the grip and durability you need. Built specifically for Ford 4.6L and 5.0L modular engines making up to 550 ft-lbs of torque, this clutch solves the common problem of stock clutches slipping under power while maintaining the smooth engagement characteristics essential for daily driving.

The Kevlar/Kevlar friction material combination provides an ideal balance of holding power and heat dissipation. Unlike organic materials that fade under repeated high-heat cycles, Kevlar maintains its coefficient of friction even during aggressive driving. The dual Kevlar surfaces offer progressive engagement - firm enough to handle launches and power shifts, yet forgiving enough for smooth street manners. The sprung hub design absorbs drivetrain shock loads that would otherwise stress the transmission input shaft, while reducing the gear rattle common with solid hub designs.

Every MDL Superior clutch is hand-assembled in-house using precision manufacturing standards. The friction material is double-riveted to the backing plates - not bonded - ensuring the facings stay attached under extreme conditions. The diaphragm pressure plate provides consistent clamping force across the entire friction surface, while the hydraulic actuation system eliminates the cable stretch and adjustment issues associated with mechanical linkages.

Compatible with 2005 and newer Ford Mustang applications using the 26-spline x 1-1/8" input shaft configuration and 11" metric flywheel bolt pattern. This kit is designed for hydraulic release systems and fits 4.6L and 5.0L Coyote modular engines. Made in the USA and backed by MDL's 1-year defect-free warranty.

What's Included

• 11" diaphragm pressure plate - metric 10mm bolt pattern, hydraulic release
• Kevlar/Kevlar friction disk - 26-spline x 1-1/8", sprung hub, double-riveted
• Pilot bushing
• Clutch alignment tool
• Installation and break-in instructions
• 1-year defect-free warranty
• Lifetime technical support

Superior Kevlar/Ceramic Clutch Kit | 2005-2025 Mustang 4.6L/5.0L | 26-Spline

Key Features

• 600 lb-ft torque capacity for aggressive street/strip applications
• Kevlar/ceramic dual-compound disc combines durability with aggressive bite
• 11-inch metric diaphragm pressure plate with 10mm bolt pattern
• 26-spline, 1-1/8-inch disc for increased strength over factory 10-spline
• Sprung hub design dampens driveline shock for smoother engagement
• Hydraulic clutch finger profile engineered for factory-style hydraulic release
• Hand-built in-house with double-checked tolerances
• Made in the USA
• 1-year defect-free warranty

Description

When your modular Mustang needs a clutch that can survive hard launches without sacrificing daily drivability, the Superior Kevlar/Ceramic Clutch Kit delivers 600 lb-ft of torque capacity in a street-friendly package. This kit is engineered for the enthusiast who demands real holding power from their 4.6L or 5.0L Coyote without the harsh, on-off engagement of a full-ceramic disc.

The dual-compound Kevlar/ceramic disc is the heart of this upgrade. The Kevlar friction material provides exceptional durability and smooth engagement characteristics, while the ceramic compound delivers aggressive bite and superior heat resistance under hard use. This combination gives you the best of both worlds: a clutch that grabs hard when you need it but still behaves during stop-and-go traffic. The sprung hub design absorbs driveline shock, protecting your transmission input shaft and reducing gear chatter at idle.

The 26-spline, 1-1/8-inch disc is a significant step up from the factory 10-spline design, providing substantially more torque transfer area and improved durability under high-load conditions. The 11-inch metric diaphragm pressure plate features a clutch finger profile specifically designed for smooth, progressive release with factory-style hydraulic systems. The 10mm bolt pattern ensures proper fitment on 2005-and-up Mustang flywheels.

Every Superior clutch disc is hand-built in-house, with quality, tolerances, and operation double-checked before shipping. This kit fits 2005-2025 Mustang 4.6L and 5.0L engines using the OEM hydraulic release system. Made in the USA and backed by a 1-year defect-free warranty.

Kit Includes

• 11-inch metric diaphragm pressure plate (10mm bolt pattern)
• Kevlar/ceramic dual-compound disc, 26-spline x 1-1/8-inch, sprung hub
• Pilot bearing
• Clutch alignment tool

Note: Throwout bearing not included. Use OEM replacement for proper hydraulic release operation.

McLeod RST Twin Disc Clutch Kit | 2001-Up Mustang V8 | 26-Spline Organic

Key Features

• 800 horsepower capacity for high-powered street builds
• Twin organic-lined friction discs deliver smooth engagement with soft pedal effort
• 26-spline hub with 1.125-inch input shaft diameter for TREMEC T-56 compatibility
• 246mm (9.687-inch) disc diameter for maximum clamping surface
• Sprung hub design with diaphragm-style pressure plate
• McLeod patented adapter ring fits Ford 164-tooth Modular flywheels
• Fits 2001-up Mustang V8 applications: 4.6L, 5.0L Coyote, and 5.4L
• Made in the USA

Description

When your Mustang's power output pushes past what a single-disc clutch can reliably hold, the McLeod RST Twin Disc delivers an economical twin-disc solution rated to 800 horsepower while maintaining genuine street manners. This clutch kit solves the common problem of choosing between holding capacity and daily driveability—you don't have to sacrifice one for the other.

The twin 246mm organic-lined friction discs double the engagement surface compared to single-disc setups. Organic facings provide smooth, progressive engagement with a soft pedal effort, making this clutch kit ideal for the street performance enthusiast who doesn't want the harsh, grabby engagement of metallic race compounds. The sprung hub design absorbs drivetrain shock, while the diaphragm-style pressure plate delivers consistent clamping force through the entire rpm range.

McLeod's patented adapter ring system allows this clutch to work with Ford 164-tooth Modular engine flywheels (4.6L, 5.0L Coyote, 5.4L). The 26-spline hub with 1.125-inch diameter pairs directly with TREMEC T-56 six-speed transmissions. Note that this kit requires a small valley ID flywheel configuration—it will not fit 2011-2017 factory flywheels. For GM LS-X applications, this kit works only with LS1/LS6 flat-style flywheels; recessed LS2/LS3/LS7 flywheels will not work.

This is a street performance clutch—not designed for competition use where sustained high-heat drag racing or track sessions demand more aggressive friction materials. Proper break-in requires 500-750 miles of stop-and-go city driving to actuate the clutch 1,200 to 1,500 times before any hard use. Made in the USA.

Kit Includes

• Diaphragm-style pressure plate
• Two organic-lined friction discs with sprung hubs
• Floater plate
• McLeod patented adapter ring (large gold metric ring)
• Pilot alignment tool
• Installation instructions

Note: Pilot bushing and throwout bearing not included. Flywheel resurfacing and bellhousing alignment check recommended during installation.

Key Features

• 1,000hp torque capacity - built for extreme horsepower street/strip applications
• Dual ceramic friction discs provide slightly aggressive engagement with soft pedal effort
• 9.687-inch (246mm) disc diameter with 1-1/8-inch x 26-spline input shaft
• Patent-pending large gold metric adapter ring - bolts to your existing flywheel
• Blanchard ground floater plate distributes heat evenly and reduces driveline noise
• Diaphragm pressure plate delivers consistent clamping force with lighter-than-stock pedal feel
• Solid hub design for maximum torque transfer
• Fits Ford 164T Modular (4.6L, 5.0L Coyote, 5.4L) and GM 168T LS1/LS6 flat-style flywheels
• No dedicated flywheel required - economical upgrade path for high-power builds

Description

When your build pushes past 500hp and you still want to drive it on the street, single-disc clutches start showing their limits. The McLeod RXT twin disc clutch kit delivers 1,000hp holding capacity in a package that maintains street manners - soft pedal effort, smooth engagement, and the kind of durability that lets you drive to the track, run quarter-mile passes, and drive home without drama.

The engineering centers on dual ceramic friction discs mounted to a Blanchard ground floater plate. The ceramic facings provide slightly aggressive engagement with excellent release characteristics - enough grip for serious power without the on-off grabbiness that makes some racing clutches miserable in traffic. The floater plate distributes heat across both friction surfaces, preventing the hot spots that kill single-disc setups under sustained abuse. McLeod's diaphragm pressure plate maintains consistent clamping force throughout the disc's lifespan while actually delivering lighter-than-stock pedal effort.

This kit uses McLeod's patent-pending large gold metric adapter ring, eliminating the need for a dedicated flywheel. The adapter ring bolts directly to flat-style metric flywheels found on Ford 164T Modular engines (4.6L, 5.0L Coyote, 5.4L) and GM 168T LS1/LS6 applications. Critical note: this kit will NOT fit factory 2011-17 Coyote flywheels, recessed LS2/LS3/LS7 flywheels, or flywheels with crank reliefs larger than 6.250 inches in diameter. The 1-1/8-inch x 26-spline input shaft fits T-45, TR-3650, T-56, TR-6060, and TREMEC Magnum transmissions with 26-spline inputs.

Break-in requires 500-750 miles of stop-and-go city driving to properly seat the friction surfaces - no drag racing or dyno pulls until you've actuated the clutch 1,200-1,500 times. Always resurface the flywheel with a coarse stone-ground finish, replace the pilot bearing, and verify bellhousing alignment during installation. This kit does not include a pilot bearing or throwout bearing.

What's Included

• Diaphragm pressure plate
• Two ceramic friction discs (9.687-inch diameter, solid hub)
• Blanchard ground floater plate with noise-reducing straps
• Large gold metric adapter ring - CNC-machined and anodized (patent-pending)
• Pilot alignment tool
• Installation instructions
• Lifetime tech support from Modern Driveline

Note: Pilot bearing and throwout bearing not included - must be sourced separately for your application.

Key Features

• M10 x 1.5mm x 23.5mm dimensions for precise Ford Modular and AMC V8 fitment
• 8740 chromoly steel construction with black oxide finish for corrosion resistance
• Tensile strength of 180,000 PSI — far exceeds OEM hardware
• Exclusive 12mm hex head design for improved wrench engagement
• Larger-than-stock shank diameter increases clamping strength and improves pressure plate register
• Aerospace alloy forged construction with heat treatment prior to thread rolling
• Application-specific grip length ensures proper thread engagement

Description

Pressure plate bolts are critical safety components that secure your clutch assembly under extreme clamp loads and heat cycles. Factory hardware is engineered for economy, not performance — it can stretch, fatigue, or fail under racing or aggressive street use. These ARP High Performance Series bolts solve that problem with premium 8740 chromoly steel hardened to a nominal tensile strength of 180,000 PSI, significantly stronger than OEM fasteners.

Each bolt is forged from aerospace-grade alloy and heat-treated before thread rolling and machining, ensuring maximum grain structure integrity and fatigue resistance. The black oxide finish provides corrosion protection while maintaining proper torque characteristics. The exclusive 12mm hex head design delivers better tool engagement than standard fasteners, reducing the risk of rounding during installation or removal at high torque values.

The larger-than-stock shank diameter increases clamping force and improves register accuracy between the pressure plate and flywheel — critical for maintaining concentricity and preventing clutch chatter. These bolts are application-specific for Ford 4.6L, 5.0L, and 5.4L Modular V8 engines, plus AMC V8 applications (call for AMC fitment details), ensuring proper grip length and thread engagement for your specific combination.

When you're building a high-performance drivetrain, don't let bargain-bin hardware be the weak link. ARP fasteners are the trusted choice of professional engine builders and racers worldwide. Backed by ARP's manufacturer warranty against defects.

What's Included

• Six (6) M10 x 1.5mm x 23.5mm pressure plate bolts
• 8740 chromoly steel construction with black oxide finish
• 12mm hex head design
• ARP manufacturer's warranty against defects

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

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

Description

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

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

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

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

What's Included

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

Key Features

• 6061-T6 aluminum tube with 0.125" wall thickness for optimal strength-to-weight ratio
• 3.5" diameter one-piece design eliminates factory two-piece center bearing failure point
• 31-spline forged steel slip yoke for T56 Magnum XL 31-spline output shaft
• 113mm manual pinion flange — confirm your vehicle's pinion flange size before ordering
• 1350 series U-joints with clearances less than 0.002" for smooth power transfer
• Shaft runout less than 0.010" and balanced to less than 0.20 oz up to 8,000 RPM
• Hand-assembled and computer-welded
• 100% vibration-free guarantee backed by over 90 years of high-speed balancing expertise

Description

Your factory steel two-piece driveshaft was designed for daily driving, not for handling the increased power output of a T56 Magnum XL swap. This Dynotech aluminum one-piece driveshaft eliminates the failure-prone center support bearing while dramatically reducing rotating mass — translating directly to improved throttle response, quicker acceleration, and reduced elapsed times at the track.

Dynotech Engineering Services traces its roots to Balance Engineering by General Motors in 1923. Today, they supply driveshafts for 75-80% of NASCAR teams, along with NHRA, SCCA, NMRA, and professional off-road racing. Every Dynotech driveshaft is hand-assembled, computer-welded, and high-speed balanced to tolerances that exceed industry standards — shaft runout under 0.010", U-joint clearances under 0.002", and balance verified at speeds up to 8,000 RPM.

Constructed from 6061-T6 aluminum with a 3.5" diameter and 0.125" wall thickness, this shaft delivers the strength needed for high-horsepower applications while weighing significantly less than the factory steel assembly. The forged steel 31-spline slip yoke mates directly to the T56 Magnum XL's output shaft, and the 113mm rear pinion flange fits 2015-2017 Mustang GT manual transmission applications. 2018+ S550 Mustangs use a different flange size — verify your pinion flange dimensions before ordering.

Designed specifically for 2015 and newer Mustangs equipped with 5.0L Coyote engines and T56 Magnum XL 6-speed transmissions. This is a precision-built, direct bolt-in component from a manufacturer with a proven track record at the highest levels of motorsport.

What's Included

• 3.5" diameter 6061-T6 aluminum driveshaft tube (0.125" wall thickness)
• 31-spline forged steel slip yoke (1350 series)
• 113mm manual pinion flange
• 1350 series universal joints (precision-balanced)
• Mounting hardware

Important: Confirm your vehicle's pinion flange size (113mm or 110mm) before shipping. 2015-2017 Mustang GT manual transmission applications typically use the 113mm flange, while automatic applications and 2018+ models may differ.

Key Features

• 3.5" O.D. x 0.125" wall 6061-T6 aluminum tubing - lightweight with superior torsional strength
• Sonnax forged chromoly 31-spline slip yoke with 1350 series U-joint compatibility
• 113mm manual pinion flange engineered for Mustang 8.8" rear axle
• Significant weight reduction over steel - reduces rotating mass for improved acceleration and throttle response
• High-speed balanced and custom-built to your exact vehicle measurements
• Direct fit for 2005-2014 Mustang GT and GT500 with T56 Magnum XL transmission
• Made in the USA with MDL lifetime technical support

Description

Swapping to a T56 Magnum XL in your '05-'14 Mustang GT or GT500 demands a driveshaft engineered to handle the transmission's 700 lb-ft torque capacity while delivering the performance benefits that make the upgrade worthwhile. This custom aluminum driveshaft solves the challenge of connecting your new 31-spline output transmission to the factory 8.8" rear end with components built to exceed the demands of serious power.

The 3.5" outside diameter 6061-T6 aluminum tube with 0.125" wall thickness delivers an ideal balance of torsional strength and reduced rotating mass. Aluminum driveshafts typically weigh 8-10 pounds less than comparable steel units - that's meaningful weight reduction right where it matters most. Lower rotating mass translates directly to improved throttle response, quicker acceleration, and reduced drivetrain inertia during hard shifts. The larger 3.5" diameter provides substantially more strength than smaller tube designs while maintaining the weight advantage.

At the transmission end, the Sonnax forged chromoly slip yoke features 31-spline engagement matched to the Magnum XL's output shaft, with 1350 series U-joint compatibility for high-torque reliability. These forged chromoly yokes are built to handle the punishment of high-horsepower street and strip applications. The 113mm manual pinion flange ensures proper engagement with your Mustang's differential.

This is a custom-built assembly requiring precise measurements from your completed vehicle. Each driveshaft is professionally high-speed balanced to eliminate vibration across the entire RPM range. Fits 2005-2014 Mustang GT and GT500 models equipped with 4.6L or 5.0L Modular engines when mated to a T56 Magnum XL transmission. Made in the USA with MDL's lifetime technical support.

What's Included

• Custom-built 3.5" O.D. x 0.125" wall 6061-T6 aluminum driveshaft tube
• Sonnax forged chromoly 31-spline slip yoke
• 1350 series U-joint
• 113mm manual pinion flange
• Flange bolts
• High-speed balancing and professional assembly
• MDL lifetime technical support

How to Order

This item requires measurements to be taken from your vehicle when finished. Download the Driveshaft Build Sheet and submit the completed form to info@moderndriveline.com so we can start building your driveshaft to your exact specifications.