The most reasonably priced component used on the Cb450s 1988 (j) Germany 27p Rear Fender is the Nut,flange,6mm.
The Rear Fender is made up of components including this Fender A,rear which is the most expensive.
The sixteen Cb450s 1988 (j) Germany 27p Rear Fender component parts are all listed in this schematic.