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TREMEC TKX 5-Speed Transmission

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TREMEC is pleased to announce the release of the new TKX, a 5-speed RWD manual transmission developed solely for the aftermarket.

For the development of the new transmission, TREMEC engineers took a forward-looking approach to finding the best and most efficient solution. This included universal packaging, excellent shifting performance, and extreme durability.

The end result is superior shift-ability with smooth shifts at high RPMs through the use of multi-cone synchronizers and hybrid synchronizer rings. At the same time, noise, vibration and harshness (NVH) performance is optimized with a gear layout to best control stress levels, while providing structural stiffness with a ribbed, 3-piece aluminum housing. Durability is further optimized with oversized gear widths, gaskets at all flanges and caged needle bearings in all gear positions.

Whether restoring or upgrading a classic muscle car or a 1930s-era roadster coupe, the new TREMEC TKX 5-speed RWD manual transmission delivers a top-quality drivetrain solution.

When you convert to the TREMEC TKX 5-Speed, you will experience:

  • • 30-50% increase in fuel economy
  • • Low RPM cruising for greatly reduced driver fatigue and an improved highway driving experience. Road trips are fun again!
  • • Reduced engine wear leading to longer engine life
  • • Reduced NVH (noise - vibration - harshness)
  • • This is the transmission only, if you would like a more complete kit, call us or request a quote.


TREMEC TKX 5-Speed is the compact transmission you've been waiting for!

The TKX has a rounded case and is streamlined to the max to fit inside tight transmission tunnels with no cutting in most applications. The shifter plate has a low profile and the shifter is nice and compact. It's pretty perfect right out of the box, but if you need a shorter throw or a PerfectFit™ shifter location, Silver Sport Transmissions is ready with an STX Shifter®. Complete kits are available, call us or request a quote by clicking the red button above.



Torque Capacity - 600 lb•ft

Shift Capacity - 7,500 rpms

Input Splines - 10 or 26

Output Splines - 31

Shifter Positions  - 3 (Over 25 with STX Shifter Upgrade)

Speedo Output - Mechanical and Electronic



      Input Gear Ratios          
Part Number Style Torque Rating Spline 1st 2nd 3rd 4th 5th Rev.
TCET18086 Ford 600 lb-ft 10 3.27 1.98 1.34 1.00 0.72 3.00
TCET18084 Ford 600 lb-ft 26 2.87 1.89 1.28 1.00 0.81 3.00
TCET17765 Ford 600 lb-ft 26 2.87 1.89 1.28 1.00 0.68 3.00
TCET18085 Ford 600 lb-ft 26 3.27 1.98 1.34 1.00 0.72 3.00
TCET18083 GM 600 lb-ft 26 3.27 1.98 1.34 1.00 0.72 3.00
TCET17722 GM 600 lb-ft 26 2.87 1.89 1.28 1.00 0.81 3.00
TCET17805 GM 600 lb-ft 26 2.87 1.89 1.28 1.00 0.68 3.00





Jeff Kauffman gives us a better look and overview of the TREMEC TKX 5-Speed features.

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