Parts such as the Cam Chain - Tensioner: Tensioner Chain, Bolt,hex Kno 7x17, Chain Guide Plate, Sprocket,cam are included in the Cx500c Custom 1980 (a) France Cam Chain - Tensioner parts fiche.
The most reasonably priced component used on the Cx500c Custom 1980 (a) France Cam Chain - Tensioner is the Pin,lock 6mm.
This Cam Chain - Tensioner diagram displays the required parts for the Cx500c Custom 1980 (a) France Cam Chain - Tensioner.