The lowest price component in this Rear Brake Caliper parts-list fiche is the Pin,bolt.
Parts such as the Rear Brake Caliper: Screw,bleeder, Piston, Bush,pin, Cap,bleeder are included in the Gl1500c Valkyrie 1997 (v) Australia / Rbm Rear Brake Caliper parts fiche.
With two applications this Seal Set,piston is the most specified part.