Parts such as the Crankshaft/piston: Crank Shaft Comp., Ring,piston 0.50, Key, Woodruff, Ring,piston 0.75 are included in the Z50g Monkey 1979 (z) Australia Crankshaft/piston parts fiche.
The lowest price component in this Crankshaft/piston parts-list fiche is the Clip, Piston Pin.
This schematic depicts all components used in the Z50g Monkey 1979 (z) Australia Crankshaft/piston partslist.