American Powertrain Announces New TREMEC TKX 5-Speed Transmission

Our friends at American Powertrain have a close relationship with TREMEC, which allows them to carry all of TREMEC’s latest transmission offerings. American Powertrain then pairs these awesome transmissions with swap kits for various classic muscle cars and trucks.

American Powertrain just sent this press release over, that provides additional information upon this brand new offering from TREMEC.

American Powertrain Announces New TREMEC TKX 5-Speed Transmission

Cookeville, TN (November 6, 2020)…The TREMEC TKX is the new 5-speed in town. TREMEC has historically based their aftermarket transmissions on their highly successful OE models such as the Magnum T-56 and the T-5; the TKX is a brand new design made from the ground up as a strictly aftermarket transmission. Designed to fit classic muscle cars and custom builds, the TKX has a compact, streamlined case. The triple cone synchronizer design carried over from the Magnum makes for smoother shifts.  Capable of shifting at 7,500 rpm, the TKX also can easily handle 600 ft/lbs of torque. The TKX runs both electronic and mechanical speedometers and its electronic speedo output doubles as a VSS.

American Powertrain provides a mid-shift conversion as well as a new line up of their famous White Lightning shifter upgrades. The White Lightning Shifter features over 60 additional shifter locations to help get the new TKX set up for your muscle car, truck or custom project. American Powertrain also produces highly customized direct fit versions of the TKX for classic Corvettes and Mopars.  The TKX is covered by a 12-month factory warranty which American Powertrain backs up with their own two year warranty.

Additional features include:

  • Designed for multiple applications with little to no floor pan modifications
  • Compact, end-loaded design provides the perfect solution for custom builds
  • Outstanding shift-ability at high RPMs (up to 7,500) to match modern, high-performance
  • 600 pound-foot (lb.-ft.) of torque capacity
  • Single overdrive reduces engine wear and fuel consumption for comfortable roadway driving

For more information about the new TREMEC TKX 5-speed, view this video, or visit To speak with one of American Powertrain’s highly qualified sales technicians, call 931-646-4836.

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