The component with the lowest price in the CLUTCH schematic is the Bolt,flange 6x25.
The Clutch assembly is constructed from several parts from which the Outer Comp.,clutc is the most expensive.
Parts such as the Clutch: Plate,clutch.lifter, Nut,lock (20mm), Spring,clutch, Plate A, Clutch are included in the Cb450s 1988 (j) Denmark Clutch parts fiche.