MDL TREMEC GM TKX 5-Speed | 3.27 First, 0.72 OD | 2” Left Side Shift Front Shifter, 1” or 1.5” Forward Offset Stub

Key Features

• 600 lb-ft torque capacity with 7,500 RPM shift capability and 8,000 RPM engine speed rating
• Gearing Ratio (3.27, 1.98, 1.34, 1.00, 0.72) 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” 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

The TREMEC TKX represents a complete ground-up redesign for the aftermarket, delivering capabilities that leave older 4-speeds and TKO transmissions behind. Where brass ring synchronizers in previous-generation 5-speeds felt balky approaching redline, the TKX's sintered carbon/bronze hybrid triple-cone synchronizers with non-leading tooth profiles handle 7,500 RPM shifts with precision. This isn't an adaptation of an OE transmission - it's purpose-built for classic muscle cars and restomods demanding serious performance.

TREMEC's end-loaded case design creates the slimmest 5-speed on the market, with a streamlined leading edge that clears GM A-body tunnels - Chevelle, GTO, Cutlass, Nova, and Camaro - without cutting floor pans. The ribbed three-piece aluminum housing (main case, intermediate plate, and rear extension) provides exceptional structural stiffness while gaskets at all flanges eliminate fluid leaks. All gears and shafts are machined from ASTM 4615 special-grade steel for increased torque carrying capacity, while tapered roller bearings on input, output, and countershafts reduce noise with caged needle bearings supporting all gear positions.

This TCET18083 variant features the wide-ratio gearset with a 3.27:1 first gear for aggressive launches paired with a 0.72:1 overdrive for relaxed highway cruising. The front socket shifter position with 1" or 1.5" forward offset provides precise console alignment for GM applications. Direct bolt-in compatibility with GM 3 and 4-speed Muncie/Richmond bellhousings makes this a straightforward swap. The internal three-rail shift system with steel shift forks and billet aluminum short-throw shifter delivers clean, crisp shifts while isolating road noise.

Requires TREMEC High Performance Manual Transmission Fluid (HP-MTF), Dexron-III, GM Synchromesh, Mobil 1 Synthetic ATF, or Pennzoil Synchromesh. Made in the USA with TREMEC's proven engineering.

Kit Includes

• TREMEC TKX 5-speed transmission (TCET18083) with 3.27/1.98/1.34/1.00/0.72 gear ratios
• High-performance short-throw billet aluminum shifter (2” left side shift front, 1” or 1.5” 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