Parts such as the Gearshift Drum: Fork,r/l Gear Shi, Collar,shift Drum, Washer,drum, Center Comp,shift are included in the Cb1000r 2009 (9) France / Cmf Gearshift Drum parts fiche.
The component with the lowest price in the GEARSHIFT DRUM schematic is the Roller,3x8.
The Gearshift Drum is made up of components including this Drum Comp,gear Sh which is the most expensive.