MDL TREMEC GM TKX Road Race 5-Speed | 2.87 First, 0.81 OD | 2” Left Side Shift Rear, 1” left, .65” or 1.15” Forward 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 1” left, .65” or 1.15” forward offset stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 18.37” or 18.87” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

Competitive road racers and serious builders know that shifter positioning can make or break lap times and driver comfort. Stock shift locations rarely land where you need them in a purpose-built cockpit or custom interior. This MDL-exclusive TKX variant solves that problem with a side shifter rear socket configuration featuring a forward offset shift stub adjustable from 0.65" or 1.15" - a setup you cannot buy directly from TREMEC.

The foundation is the TREMEC TCET17722 GM TKX 5-speed, built from the ground up for aftermarket applications. The close-ratio gear stack (2.87, 1.89, 1.28, 1.00, 0.81) delivers tight spacing that keeps high-revving engines in their powerband through technical sections, while the 0.81 overdrive provides civilized highway cruising when you're driving to the track. Multi-cone synchronizers with sintered bronze and carbon hybrid rings enable clean, precise shifts at engine speeds up to 7,500 RPM - critical for competitive road racing where tenths matter.

TREMEC engineered the TKX case specifically to fit restrictive transmission tunnels like those in '68-'72 Chevelles and other GM A-bodies. The end-loading, three-piece ribbed aluminum housing provides outstanding structural stiffness while maintaining a slim profile that clears factory floors without modification in most applications. All gears and shafts are machined from special-grade ASTM 4615 steel with oversized gear widths and caged needle bearings in all positions for durability under sustained high-RPM abuse.

This transmission bolts directly to GM Muncie/Richmond 3 and 4-speed bellhousing patterns. The 26-spline input accepts any compatible clutch disc, while the 31-spline output works with MDL's aftermarket slip yokes. Shift location measures 18.37" to 18.87" from the bellhousing face with a 0.65" or 1.15" offset. Uses Dexron III ATF or TREMEC HP-MTF; fluid capacity is 2.7 quarts.

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, 1” left, .65” or 1.15” forward 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