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Tremec TKX 5 SPEED

GM 26 spline, 3.27 1st gear, .72 O.D.

Part # TCET18083
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TREMEC engineers took a forward-looking approach to finding the best and most efficient solution to aftermarket transmission needs. This included universal packaging, excellent shifting performance, and extreme durability. The result is. The new TKX, a 5-speed RWD manual transmission developed solely for the aftermarket. Capable of 600 lb-ft of torque, 8000 RPM engine speeds and 7500 RPM shifts. It also has three shifter locations and a compact design allowing multiple applications with little to no floor pan modifications.


  • All-new 5-speed, single overdrive manual transmission designed, tested and built specifically for the aftermarket.
  • Special grade steel shafts and wide gears provide 600 lb.-ft. of torque capacity, 8,000 RPM engine speeds and 7,500 RPM shifts.
  • Three-piece aluminum housing provides outstanding structural stiffness and increased case strength.
  • Gaskets at all flanges to simplify installation and eliminate fluid leaks.
  • Superior shift-ability through the use of multi-cone synchronizers.
  • Gear layout and caged needle bearings reduce end play while minimizing noise, vibration and harshness (NVH).
  • Single 0.68 overdrive reduces engine wear and fuel consumption.
  • Three shifter locations and a compact design allow multiple applications with little to no floor pan modifications.
  • 26-spline input shaft with a 31-spline output shaft for added strength.
  • Built-in reverse light switch and cruise control safety switch provide safety and creature comfort for any application.
  • GM case pattern, input configuration and integrated GM transmission mount pattern.

About Tremec

Tremec transmissions are the pinnacle of manually-shifted performance. Tremec supplies some of the most innovative torque transfer solutions in the automotive industry, to some of the industry's most respected OEMs. From simple timing gears to advanced mechatronics, in sectors spanning from agriculture to defense; you can find Tremec products in a wide array of applications. However, the place where their name is best known is in the world of high-performance manual transmissions. Some of the most exhilarating vehicles to ever roll off an assembly line have featured Tremec transmissions.

Case MaterialAluminum
Drive TypeRWD
Emission Code5
Gear Ratio-Fifth.72
Gear Ratio-First3.27
Gear Ratio-Fourth1.00
Gear Ratio-Second1.98
Gear Ratio-Third1.34
Part TypeHigh Performance
Product TypeManual Transmission
Reverse Gear Ratio3.00
Torque Rating (Ft/Lbs)600
Transmission ModelTKX
Transmission Speeds5
Transmission TypeManual
Part NumberTCET18083

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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Some parts are not legal for use in California or other states with similar regulations.