GM Truck TREMEC TKX, Magnum, & A41 4L60E Transmission Kits

Modernize the driveability and towing performance of your classic GM Truck with our PerfectFit™ Transmission Kits. Specifically engineered for Chevrolet and GMC C/K series pickups, we offer the industry’s premier overdrive solutions. Choose from the streamlined TKX 5-Speed, the high-torque Magnum 6-Speed, or our smooth-shifting A41 4L60E Electronic Automatic.
 

These kits are designed to provide a seamless fit into your classic truck chassis, delivering significantly reduced cruising RPMs and improved fuel economy without sacrificing the utility of your pickup. Whether you are upgrading a C10 street truck or a classic K5 Blazer, our systems arrive as a total solution, featuring all the high-quality components required for a professional, high-performance installation that brings modern precision to your vintage GM steel.