twelve components are listed in the schematic for this Xrv750 Africa Twin 1990 (l) Italy Cam Chain/tensioner .
Some items from this specific schematic: Rubber,rr.cushion, Chain,cam (borg W, Tensioner Comp.,c, Rubber,fr.cushion.
The lowest price component in this Cam Chain/tensioner parts-list fiche is the Washer Seal, 6mm.