MDL TREMEC GM TKX 5-Speed | 2.87 First, 0.68 OD | 2” Left Side Shift Front Shifter, 1” Left, .65” or 1.15” Forward Offset Stub

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, 0.68) 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: 3” left of center line, 15.60” or 16.10” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Overview

When TREMEC's standard TKX shifter locations don't line up with your console or driving position, this MDL-modified unit solves the problem. This exclusive 2" left side mount shifter modification repositions the shift point 3" to the left with a 0.65" or 1.15" forward offset stub, allowing precise fine-tuning for driver ergonomics and console clearance that stock configurations simply cannot deliver.

The TREMEC TKX delivers 600 lb-ft of torque capacity with 8,000 RPM capability and smooth, confident shifts at 7,500 RPM. Close-ratio gearing (2.87, 1.89, 1.28, 1.00, 0.68) provides aggressive acceleration through the gears with a deep 0.68 overdrive that drops highway cruising RPM for quieter, more fuel-efficient cruising. Multi-cone synchronizers featuring sintered carbon-bronze hybrid rings eliminate shift binding at high engine speeds, a significant improvement over earlier five-speed designs.

The TKX's end-loading case design delivers a slimmer profile with increased structural stiffness from the ribbed, three-piece aluminum housing. This compact architecture clears factory tunnels in GM A-bodies like the Chevelle, GTO, Cutlass, Nova, and Camaro without floor modifications. All gears and shafts are manufactured from special grade ASTM 4615 steel for increased torque carrying capacity, with tapered roller bearings on input, output, and countershafts reducing noise and improving durability.

Designed for GM Muncie/Richmond bellhousing patterns with a 26-spline input shaft and 31-spline output shaft. Both mechanical and analog electric speedometer drives are included for instrumentation flexibility. Recommended fluids include TREMEC HP-MTF, Dexron III ATF, GM Synchromesh, Mobil 1 Synthetic ATF, or Pennzoil Synchromesh with a 2.7-quart capacity.

Kit Includes

• TREMEC TKX 5-speed transmission (TCET17805) with 2.87/1.89/1.28/1.00/0.68 gear ratios
• High-performance short-throw billet aluminum shifter (2” left side shift front, 1” left, .65” or 1.15” forward offset stub)
• 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