The Rear Hub is made up of components including this Drum-assy,rear Brake which is the most expensive.
The component with the lowest price in the REAR HUB schematic is the Washer-plain-small,8m.
A sample from the products for the Rear Hub include: Sprocket, Hub, 48t, Sprocket-hub,50t, Seal-oil, Sprocket-hub,49t.