The Yamaha BODY FITTING has twelve products enlisted in the schematic.
The most reasonably priced component used on the G8-ef 1990 Body Fitting is the Rivet, Blind (8r6).
Some items from this specific schematic: Panel, Rear Fender 2, Rivet, Blind (8r6), Plate,side Trim, Panel, Rear Fender 1.