MDL TREMEC GM TKX Road Race 5-Speed | 2.87 First, 0.81 OD | Short Body Front, 1.65” - 2.15” Back

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
• Front Mount Short Body Shifter with 1.65” or 2.15” Backward Offset
• Shifter Stub Location: 14.33” or 14.83” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

Road race applications demand precise shifter placement--and that's exactly what this MDL-modified TREMEC TKX delivers. Starting with the TCET17722 close-ratio 5-speed, Modern Driveline configures this transmission with front shift positioning and a custom offset shifter stub that moves the shifter arm 1.65" or 2.15" backward. The result is exact shifter placement for console-equipped GM muscle cars where the factory console position is non-negotiable.

The TKX platform represents TREMEC's ground-up aftermarket design, built to handle 600 lb-ft of torque while shifting cleanly at 7,500 RPM. All gears and shafts are machined from special-grade ASTM 4615 steel, while sintered bronze/carbon hybrid triple-cone synchronizers with non-leading tooth profiles deliver smooth, high-RPM engagement. The robust internal three-rail shift system uses steel shift forks throughout, and caged needle bearings in all gear positions reduce end play and extend service life.

The close-ratio gear stack (2.87 first through 0.81 overdrive) keeps your engine in the meat of the powerband during spirited driving while still providing reasonable highway cruising RPMs. The slim end-loading case design--featuring a ribbed three-piece aluminum housing with main case, intermediate plate, and rear extension--clears most GM A-body tunnels (Chevelle, GTO, Cutlass, Nova, Camaro) without cutting. This GM-pattern TKX bolts directly to standard GM Muncie/Richmond 3-speed and 4-speed bellhousings using a 26-spline input that requires a matching clutch disc.

Factory provisions include both mechanical (7-tooth) and electronic speedometer outputs, a built-in reverse light switch, and cruise control safety switch. Uses Dexron III ATF or TREMEC HP-MTF fluid with a 2.7-quart capacity.

What's Included

• TREMEC TKX transmission assembly (TCET17722 base) with MDL front shift modification
• Billet aluminum short-throw shifter with front positioning
• Custom offset shifter stub (1.65" or 2.15" backward offset arm)
• Mechanical (7-tooth) and electronic speedometer provisions
• Built-in reverse light switch and cruise control safety switch