13-tooth clutch bell made from HUDY steel, precision-machined on a special gear device. Strategically lightened and never having to sacrifice energy or durability to reduce rotating mass. The 3x ball-bearing design originated to obtain additional exact and wobble-free procedure. Less play for the clutch bell increases performance and far longer lifespan for bearings and clutch bell. Lightweight design with machined spaces actually helps you to reduce temperature build-up inside clutch. Fits simply 4-shoe clutch #358400.