On this parts fiche the Bolt-flanged-small,8x is the most specified component.
The Accessory(passenger Backrest) assembly is constructed from several parts from which the Pass Backrest (fixed) is the most expensive.
A sample from the products for the Accessory(passenger Backrest) include: Bolt,flanged,10x70, Pad,seat, Cap,14, Bolt,flanged,10x57.