The Rear Wheel is made up of components including this Casting Wheel, Rear which is the most expensive.
Some items from this specific schematic: Washer(526), Balancer, Wheel (30g), Bolt (183-25378-00), Washer, Plate(56v).
The Screw, With Washer (1t4/2f3) is the cheapest item from this partsfiche.