1964-1966 Mopar A-Body TREMEC TKX & A41 4L60E Transmission Kits

Revolutionize the highway capability of your 1964-1966 Dodge Dart or Plymouth Barracuda with our PerfectFit™ Transmission Kits. These "Early A" Mopars are iconic for their compact muscle styling, but their narrow transmission tunnels make modern upgrades a challenge. We solve this with the industry’s most refined solutions: the streamlined TKX 5-Speed, designed for low-profile fitment, and our precision-controlled A41 4L60E Electronic Automatic.
 

Specifically engineered for the 1964-1966 chassis, our kits provide a seamless fit that respects your car's original floorpan and torsion bar suspension. Experience a dramatic reduction in cruising RPMs and cabin noise while enjoying crisp, modern shift quality. Each system arrives as a total solution, including all necessary components to replace your original 904 Torqueflite or 4-speed manual with a high-performance overdrive system that fits your factory interior perfectly.