The most reasonably priced component used on the Xr500r 1982 (c) Usa Side Cover 81-82 is the Screw-washer 6x12.
This Cover,r.side*r-23 is the most expensive of the items that make up this Side Cover 81-82 assembly.
A sample from the products for the Side Cover 81-82 include: Screw-washer 6x12, Label,l.side Cove, Cover,l.side*r-23, Washer,chain Case.