The most reasonably priced component used on the Gs425l 1979 (n) Usa (e03) Rear Wheel is the O-ring,boss.
Some items from this specific schematic: Washer (15x24x1.6), Lever,rear Brake Cam, Washer (17x30x3.2), Bolt.
This part-list fiche shows all the components that make up the Gs425l 1979 (n) Usa (e03) Rear Wheel .