The most reasonably priced component used on the Xr650r 2000 (y) European Direct Sales Rear Wheel is the Nut,hex.,8mm.
Check out any of the twenty-eight Rear Wheel components enlisted.
Parts such as the Rear Wheel: Collar,axle Dista, B/brg Rad N/com, Hub Sub Assy,rr, Rim,rr.wheel are included in the Xr650r 2000 (y) European Direct Sales Rear Wheel parts fiche.