Of all the components used in this assembly the Crankshaft Assy is the most expensive.
Parts such as the Crankshaft - Piston: Key Woodruff 146115450000, Rod, Connecting, Oil Seal(3kx), Circlip(1ar) are included in the Yz125 1989 (k) Usa Crankshaft - Piston parts fiche.
This schematic depicts all components used in the Yz125 1989 (k) Usa Crankshaft - Piston partslist.