34821-41 Samwel's Transmission Kits for 45CI Models

This Samwel Supplies transmission kit is a game-changer for owners of 45" Solo and Servi-Car models looking for better performance. It includes a complete set of drop-forged gears designed to convert an existing 1941 through 1973 style 3-speed transmission into a smooth-shifting and reliable 4-speed unit. This European-made kit fits into the genuine transmission housing, though it does require minor modifications for first gear clearance and a small modification to the transmission door. It replaces OEM 34821-41 and offers significantly improved strength and gear ratios for your vintage seven-fifty. It is the ultimate upgrade for riders who want modern reliability and better gear spacing from their classic flathead drivetrain, and is sold as a set.