The Crankshaft/piston is made up of components including this Crankshaft which is the most expensive.
The most reasonably priced component used on the Cb1000ra 2011 (a) France / Abs Cmf Crankshaft/piston is the Bolt,flange 6x18.
On this parts fiche the Brg Crank Shaft B is the most specified component.