The Rear Wheel assembly is constructed from several parts from which the Hub,rear Wheel is the most expensive.
Some items from this specific schematic: Sprocket Final Driven 72t, Tube2251250-17tr6, B/brg Rad N/com, Tube,tire.
The Spoke B, Rear is the most widely applied product in the CA105T TRAIL 1963 USA REAR WHEEL ( eighteen times ).