The component with the lowest price in the REAR CALIPER (MODEL P) schematic is the Bolt.
In this schematic the "Seal,fr Calipe" is used most often.
Parts such as the Rear Caliper (model P): Seal,wiper, Cover, Shim,pad, Pad,brake are included in the Gsx1100g 1991 (m) Usa (e03) Rear Caliper (model P) parts fiche.