The lowest price component in this Front Fender parts-list fiche is the Bolt,flange,6x25.
The twelve Xr500r 1981 (b) Usa Front Fender component parts are all listed in this schematic.
Some items from this specific schematic: Fender,fr, Bolt,flange,6x25, Collar,fr.fender, Bolt,flange,6x25.
