The most reasonably priced component used on the Rd350 1974 Usa Crankshaft - Piston is the Circlip (137-11634-00).
Check out any of the thirty-one Crankshaft - Piston components enlisted.
The Rd350 1974 Usa Crankshaft - Piston consists of thirty-one pieces with the Crank Assy being the most expensive.