Parts such as the Crankshaft: B/brg Rad N/com, Piston (std.), Ring Piston(0.50), Piston (1.00) are included in the Xr250r 1984 (e) Usa Crankshaft parts fiche.
Check out any of the thirty-eight Crankshaft components enlisted.
The most reasonably priced component used on the Xr250r 1984 (e) Usa Crankshaft is the Clip,piston Pin.