The lowest price component in this Crankshaft/piston parts-list fiche is the Roller, 2x13.8.
Some items from this specific schematic: Ring Set,piston,0, Gear,primary Driv, Pin,dowel,4x4.4, Roller, 2x13.8.
This Crankshaft/piston diagram displays the required parts for the Cb250p 1996 (t) Poland / Plb Crankshaft/piston.