The most reasonably priced component used on the Gs650gt 1981 (x) (e01 E02 E04 E15 E16 E17 E18 E21 22 24 25 26 34 Clutch is the Washer.
With eight applications this Plate,clutch Drive (mca) is the most specified part.
Some items from this specific schematic: Washer, Seat,wave Washer, Washer, Spring.