The Cushion Assy.,rr. is the most widely applied product in the CB650 1980 (A) CANADA F-23 REAR CUSHION ( two times ).
Some items from this specific schematic: Washer,10.3m/m, Spring, Rr. Shock, Adjuster, Spring, Bolt Hex 10x32.
The most reasonably priced component used on the Cb650 1980 (a) Canada F-23 Rear Cushion is the Nut,hex.,10mm.