Some items from this specific schematic: Pin, Piston, Bearing(2vm), Oil Seal (434), Circlip (2f1).
The lowest price component in this Crankshaft-piston parts-list fiche is the Circlip (2f1).
This schematic depicts all components used in the Yz250 Competition 1989 (k) Usa Crankshaft-piston partslist.