Street Rod & Custom Truck TREMEC TKX & Magnum Transmission Kits

Perfect your custom build with the power and precision of our PerfectFit™ TREMEC Transmission Kits for street rods and custom trucks. Whether you are finishing a ground-up restoration or upgrading a classic hauler, we offer the industry’s most versatile manual overdrive solutions, featuring the streamlined TKX 5-Speed and the high-torque Magnum 6-Speed. Our kits are engineered to provide a seamless fit for unique and custom applications, delivering modern highway driveability and crisp, high-RPM shifting. Each system is designed as a total solution, arriving with all the high-quality components necessary to ensure a smooth installation and a premium driving experience for your custom project.