The most reasonably priced component used on the Kvf300-a4 Prairie300 2002 Usa / 4x4 Crankcase is the Screw-cntsnk Hd,6x16.
The Crankcase assembly is constructed from several parts from which the Set-crankcase is the most expensive.
Some items from this specific schematic: Plate-position, Bearing-ball,5206, Screw-pan Head,6x12, Ring-o,od=18.