In this schematic the "Disk,clutch Frict (nas)" is used most often.
The Spring Clutch is the cheapest item from this partsfiche.
Parts such as the Clutch: Brg C,needle,35x4, Washer,thrust,28., Joint Piece,clutc, Plate,clutch Pres are included in the Cb1000r 2011 (b) European Direct Sales / St Clutch parts fiche.