The Crankshaft assembly is constructed from several parts from which the Crankshaft-comp is the most expensive.
Parts such as the Crankshaft: Gear-spur,oil Pump Dr, Balancer,shaft, Rod-connecting, Circlip-type-c,32mm are included in the Ksf450-bbf Kfx450r 2011 Usa Crankshaft parts fiche.