THE SUPER NUT FOR BIG TWIN TRANSMISSION SPROCKET | Big Twin | Dyna | FX | FXR | Sportster | Touring

Super nut

Stops sealing problems of the 4 Speed transmission output shaft, at a very affordable price. It helps avoid transmission oil leakage as a result of main drive gear bushing wear. Fits 1936-1964 (open and closed primary), 1965-1969 (open primary) and 1970-1986 without any modification.