Some items from this specific schematic: Piston Set, Spring, Clip,pad Pin, Cap,breather.
The lowest price component in this Rear Calipers parts-list fiche is the Bolt.
This schematic depicts all components used in the Gs850g 1986 (g) (e01 E02 E04 E06 E22 E24 E25) Rear Calipers partslist.