On this parts fiche the Pad Comp.,rr. (nas) is the most specified component.
This Caliper Assy.,rr. is the most expensive of the items that make up this Rear Brake Caliper assembly.
Parts such as the Rear Brake Caliper: Caliper Assy.,rr., Screw-washer,5x10, Cap,bleeder, Caliper Comp.,rr are included in the Cbx1000 Supersport 1981 (b) European Direct Sales Rear Brake Caliper parts fiche.