The component with the lowest price in the REAR SHOCK ABSORBER schematic is the Nut.
Parts such as the Rear Shock Absorber: Collar, Nut, O-ring,fork Inner Tube, Absorber Assembly,rear Shock are included in the Gsxr1100 1988 (j) Usa (e03) Rear Shock Absorber parts fiche.
With four applications this Seal Dust is the most specified part.