sixteen components are listed in the schematic for this Cx500 1980 (a) Italy Rear Wheel .
Of all the components that make up this Rear Wheel the O-ring, 54.5x2.4 has the lowest price.
Parts such as the Rear Wheel: Bolt,final Sprkt., Wheel Comp.,rr., Valve,rim(dunlop), O-ring, 54.5x2.4 are included in the Cx500 1980 (a) Italy Rear Wheel parts fiche.