Parts such as the Front Fender: Fender,fr, Spacer, Bolt, Upper, Fender,front are included in the Rm500 1983 (d) Usa (e03) Front Fender parts fiche.
The most reasonably priced component used on the Rm500 1983 (d) Usa (e03) Front Fender is the Lock Washer.
The most expensive part in this assembly is the Fender,front.
