The most expensive part in this assembly is the Cover,r.crankcase.
Parts such as the E-6 Right Crankcase Cover: Oring 183, Oil Seal,12x22x5, Follower,cam, Oil-seal,18x29x7 are included in the Xr250r 1982 (c) E-6 Right Crankcase Cover parts fiche.
The lowest price component in this E-6 Right Crankcase Cover parts-list fiche is the Pin,spg. 3x10.