The Rear Cushion assembly is constructed from several parts from which the Cushion Assy,rear is the most expensive.
Some items from this specific schematic: Dust Seal,17x24x5, Collar,cush Conn, Nut,u,flange,10mm, Label,rr Damper.
The most reasonably priced component used on the Cb600fa3 Hornet 2010 (a) France / Abs Cmf St Rear Cushion is the Nut,u,flange,10mm.