The Xr500 1980 (a) Usa Headlight consists of twenty-eight pieces with the Case,*r-23.a-01* being the most expensive.
Some items from this specific schematic: Nut,head Light, Collar,hdlp,set, Bolt,flange,6x22, Stay,hdlp,under.
The component with the lowest price in the HEADLIGHT schematic is the Screw,tapping,4x8.