MDL TREMEC GM TKX Road Race 5-Speed | 2.87 First, 0.81 OD | 2” Left Side Shift Front, 1” or 1.5” 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” or 1.5” forward offset stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 15.25” or 15.75” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

When your road race build demands precise shifter placement and bulletproof reliability, this MDL-modified TKX delivers both. The close ratio 0.81 fifth gear keeps engine speed in the power band during high-speed sections where a deeper overdrive would bog - exactly what autocross, road course, and spirited canyon driving demand. TREMEC designed the TKX case specifically to fit within the narrow confines of classic GM A-body tunnels, and MDL's custom forward offset shifter stubs solve the final piece: getting your shifter exactly where it needs to be for factory console integration.

The 1.0" and 1.5" forward offset options position your shifter precisely for various GM applications without floor modifications. With a shift location offset of 1.75"-2.25" from stock positioning, you get console-compatible placement while retaining all the TKX's performance advantages. TREMEC's enhanced gear sizes and revised double-lined carbon-fiber synchronizer package can be safely shifted at 7,500 RPM, with special chamfers improving shift quality and a dedicated ball detent for each of the three internal rails.

Built from 100% brand-new OEM-quality components, this transmission features special grade ASTM 4615 steel gears and shafts that exceed the durability of the previous TKO series. Oversized gear widths, gaskets at all flanges, and caged needle bearings in all gear positions ensure long-term reliability under demanding track conditions. The internal three-rail shift system with steel shift forks provides the robust, positive engagement serious drivers expect. Fluid capacity is 2.7 quarts of Dexron III ATF, GM Synchromesh, or TREMEC HP-MTF for simplified maintenance.

This road race transmission bolts directly to GM 3 and 4-speed Muncie/Richmond bellhousing patterns with no adapter required. Includes provisions for reverse light switch and cruise control safety switch. The billet aluminum side shift assembly with forward offset stubs is an MDL-exclusive modification - not available through TREMEC - designed for enthusiasts who refuse to compromise on shifter placement or transmission performance.

Kit Includes

• 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” or 1.5” 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