The most reasonably priced component used on the M400 2005 Jap (monster 400) 9151-1022e 010 Crankcase Halves is the Spring Ring.
This part-list fiche shows all the components that make up the M400 2005 Jap (monster 400) 9151-1022e 010 Crankcase Halves .
A sample from the products for the 010 Crankcase Halves include: Valve, Breather, Oil Seal, Gasket, Aluminium 14x22x2, Screw Tcei M6x35.