American Powertrain TREMEC TKX 5-Speed Transmission - Engine Builder Magazine

American Powertrain TREMEC TKX 5-Speed 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.

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
    engines
  • 600 pound-foot (lb.-ft.) of torque capacity
  • Single overdrive reduces engine wear and fuel consumption for comfortable roadway driving 

For more information: view this video, or visit americanpowertrain.com.

You May Also Like

Reid 426 Intake Roller Rocker Arms

Reid’s 426 intake roller rocker arm is for “high” ratio stand set ups.

rocker arms

Reid’s 426 intake roller is for "high'' ratio stand set ups. The 426 roller intake rocker arms with a 1.675" fulcrum length is available in ratios of 1.70, 1.75 and 1.80.

Reid machines, designs and manufactures its own line of racing products with an extensive background in drag racing in Top Fuel, Blown Alcohol, Injected, Fuel and Pro Mod classes, but also services a wide variety of motorsports applications.

Lucas Oil Fuel System Products

Preventive maintenance for fuel systems is just as important as regular oil changes.

ACL Race Series Performance Oil Pumps

ACL Race Series oil pumps are designed with high-output and high-volume capabilities.

ACL oil pump
UEM Icon 5.3L EcoTec3 L83 Gen V GDI Pistons

The piston line features forged 4032 alloy for NA and 2618 alloy for boosted applications.

UEM Icon pistons
CHE Ford Godzilla Trunnion Kit

The kit includes 16 heat-treated steel trunnions, 32 bronze bushings, and 33 retainer clips.

CHE trunnion kit

Other Posts

Rislone DEF Crystal Clean

First-of-its-kind product removes damaging crystals from SCR systems, clears P20EE codes.

Rislone DEF Crystal Clean
Pistal High Compression 100mm Drop-in Piston Kit

Made from forged aluminum, these Pistal pistons are both light and have high resistance.

Pistal pistons
B&B Performance Adjustable Billet Timing Pointers

Available for SBC, BBC and SBF, pointers come with stainless steel pointer, fasteners and a black anodized finish.

timing pointers
Holley Sniper 2 EFI

Holley’s Sniper 2 EFI ushers in a wide range of new technologies and features.

Holley Sniper 2 EFI