The sub assemblies and components that make up this Cam Chain include this Adjuster Assembly,tensioner, the most expensive part.
The most reasonably priced component used on the Gs650g 1982 (z) Usa (e03) Cam Chain is the Screw.
This schematic depicts all components used in the Gs650g 1982 (z) Usa (e03) Cam Chain partslist.