MDL TREMEC GM TKX Road Race 5-Speed | 2.87 First, 0.81 OD | 2” Left Side Shift Front, 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 .65” or 1.15” forward offset stub - precise shifter placement without compromise
• Shifter Stub Location: 3” left of center line, 15.60” or 16.10” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

Modern Driveline's TKX Road Race represents the ultimate evolution of the 5-speed manual transmission for serious road race applications. This MDL-exclusive unit solves the high-RPM shift quality issues that plagued earlier TKO transmissions - where classic brass ring synchronizers felt balky above 6,000 RPM - by delivering crisp, positive engagement all the way to 7,500 RPM shifts. Built on TREMEC's latest TKX platform, this transmission combines 600 lb-ft torque capacity with 8,000 RPM capability, making it equally at home on canyon roads, autocross courses, and dedicated road-race builds.

The engineering focus centers on the multi-cone synchronizers and hybrid synchronizer rings made of sintered bronze and carbon, which eliminate gear clash at high engine speeds. The 2" left side-mounted front socket shifter configuration with a 1" left, .65" or 1.15" forward offset shift stub places the shift lever precisely where road race drivers need it - providing optimal ergonomics for competitive driving while clearing console and bench seat applications. All gears and shafts are made from special grade steel (ASTM 4615), with wide gear widths that increase gear life and torque capacity.

TREMEC designed the TKX case specifically to fit within narrow and short tunnel confines, making installation straightforward on GM A-bodies like the Chevelle, GTO, Cutlass, Nova, and Camaro without tunnel modifications. The three-piece aluminum housing provides outstanding structural stiffness, while caged needle bearings in all gear positions and gaskets at all flanges ensure durability and leak-free operation. Compatible with GM Muncie/Richmond bellhousing bolt patterns, the TKX features a robust internal three-rail shift system with steel shift forks and tapered roller bearings on input, output, and counter shafts.

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 front, 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