Parts such as the Clutch: Gear,generator Drive, Bearing(15x28x2), Pinion,clutch Release, Bearing 10x14x10 are included in the Gsxr750 1991 (m) Usa (e03) Clutch parts fiche.
The Clutch assembly is constructed from several parts from which the Gear Assembly,primary Drive is the most expensive.
In this schematic the "Plate,clutch Driven (nas)" is used most often.
