Pinion gear shaft BT58-72

A wide selection of high quality replacement parts for all 1936-2000 single cam Big Twin models like Flathead, Sidevalve, Knuckelhead, Panhead, Shovelhead and Evolution Big Twin. Each part is quality checked. Crank pins and shafts are machined from super tough, aircraft quality steel, heat treated and hardened to 61-63 on the Rockwell scale.