The most reasonably priced component used on the Z50j Monkey 1983 (d) Finland Camshaft/valve is the Seat, Vlv. Spring.
A sample from the products for the Camshaft/valve include: Cap, Vlv. Stem, Arm,valve Rocker, Nut, Tappet., Valve,exhaust.
The Honda CAMSHAFT/VALVE has sixteen products enlisted in the schematic.