The component with the lowest price in the CRANKSHAFT schematic is the Screw.
This schematic depicts all components used in the Gn250 1996 (t) (e02 E04 E22 E24 E25 E34 E39) / P37 Crankshaft partslist.
Some items from this specific schematic: Rod,connecting, Bearing(35x80x21), Piston Set (os:1.0), Pin,crank.