See more: Crankshaft Parts
7. Pinion Shaft for Big Twin, Fits 1939-1953. Includes key and nut, S&S (OEM 24006-39)
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.