With all the components that make up the GSXR1100 1987 (H) USA (E03) REAR CUSHION LEVER assembly. The Ring,stopper is the most frequently specified with two applications.
The lowest price component in this Rear Cushion Lever parts-list fiche is the Washer.
Some items from this specific schematic: Nut 12mm, Cover,rear Swing Arm Dust, Lever Set,rear Cushion, Bearing(17x24x15).