Mopar B-Body TREMEC TKX, Magnum, & A41 4L60E Transmission Kits

Bring modern highway capability to the legendary muscle of your Mopar B-Body with our PerfectFit™ Transmission Kits. Whether you’re piloting a Dodge Charger, Plymouth Road Runner, Super Bee, or GTX, we offer the industry’s premier overdrive solutions. Choose from the streamlined TKX 5-Speed for a low-profile fit, the high-torque Magnum 6-Speed for extreme power builds, or our smooth-shifting A41 4L60E Electronic Automatic.
 

Our B-Body kits are specifically engineered to integrate with the unique floorpans and torsion bar crossmembers of the 1962-1974 platform. By significantly reducing cruising RPMs, these kits protect your engine and enhance long-distance driveability without sacrificing the iconic Mopar aesthetic. Each system arrives as a total solution, complete with all necessary components to maintain your factory shifter location—including compatibility with our legendary Pistol Grip handles—ensuring your interior looks as authentic as it performs.