The most reasonably priced component used on the Xr500 1979 (z) Usa Rear Shock Absorber is the Bolt, Flange,6x12.
Some items from this specific schematic: Rubber,stopper, Adjuster,spring, Guide,springlower, Wash Rr Cushion.
This schematic depicts all components used in the Xr500 1979 (z) Usa Rear Shock Absorber partslist.
