MDL TREMEC GM TKX Road Race 5-Speed | 2.87 First, 0.81 OD | 2” Left Side Shift Front, 1.65” or 2.15” 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 1.65” or 2.15” forward offset stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 14.60” or 15.10” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

Standard TKX shifter positions don't work for every build. Race cars with custom consoles, tight cockpits, or factory-style bench seat configurations often need the shifter further forward than TREMEC offers from the factory. This MDL-exclusive modification repositions the side shifter socket to a front location with a 1.65 in. or 2.15 in. forward offset shift stub - a configuration you cannot purchase anywhere else.

The base platform is the TREMEC TKX close-ratio with its road-race-friendly 2.87:1 first gear and 0.81:1 overdrive fifth. This gear stack keeps you in the powerband through rapid-fire shifts while the shallow overdrive maintains strong acceleration on corner exit. Inside, sintered carbon/bronze hybrid triple-cone synchronizers with non-leading tooth profiles deliver crisp engagement even above 6,000 RPM. Special rail chamfers and ball detents in the internal 3-rail shift system eliminate the notchy feel that plagued earlier 5-speeds.

The end-loading case design gives the TKX its slim profile - critical for fitting GM A-body tunnels (Chevelle, GTO, Cutlass, Nova, Camaro) without cutting the floor. At 99 pounds dry and 23.75 inches long, it installs easier than bulkier 6-speeds while handling serious power. The 31-spline output shaft uses Ford C6-style slip yokes, and fluid capacity is 2.7 quarts of Dexron III ATF for simple maintenance.

This transmission bolts directly to any GM Muncie bellhousing pattern. The front socket shifter position measures 14.60 in. or 15.10 in. from the bellhousing face, placing the shift lever 1.65 in. or 2.15 in. forward of standard locations - solving fitment problems that off-the-shelf transmissions simply cannot address.

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 (side shift front, 2” Left, 1.65” or 2.15” 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