With a quantity of four pieces, the Bolt,flange Sh 6x65 is the most used part in the CRANKCASE diagram.
Some items from this specific schematic: Packing, Cock, Stud A, Cylinder, Gasket Crank Case (nas), Clip B10,tube.
The most reasonably priced component used on the Crf50f 2011 (a) Australia Crankcase is the Clip B10,tube.