The Dr800s 1990 (l) (2 4 15 E16 E17 E18 E21 E22 E24 E25 E34 E39 E53 Front Wheel consists of eighteen pieces with the Rim,fr Wheel(21x1.85) being the most expensive.
Some items from this specific schematic: Tube,inner, Tire,front (90/90-21 54s), Spacer,front Axle,left, Protector,wheel,inner.
The Nut is the cheapest item from this partsfiche.