The Rear Wheel assembly is constructed from several parts from which the Wheel Comp.,rr. is the most expensive.
A sample from the products for the Rear Wheel include: Weight,balan(10g), Weight,bal.20g, Flg,final Driven, Tire (130/90-17).
The O-ring,56.5x2 is the lowest priced item on this Rear Wheel schematic.