Some items from this specific schematic: Stud,10x65, Oil Seal,tcj25457, Plug-oil Drain, Bearing-ball,#6305sh2.
Of all the components that make up this Crankcase ('82 Kdx250-b2) the Pin,dowel,10x8.2x14 has the lowest price.
The Crankcase ('82 Kdx250-b2) is made up of components including this Set-crankcase which is the most expensive.