Some items from this specific schematic: B/brg Rad N/com, Ring,piston 0.25, Ring Set,piston Std, Piston (0.75).
The lowest price component in this Crankshaft/piston parts-list fiche is the Clip, Piston Pin.
With a quantity of twenty-two pieces, the Roller, 2.5x10 is the most used part in the CRANKSHAFT/PISTON diagram.