A sample from the products for the Backrest - Rear Carrier Stay include: Left Stay. Backrest, Backrest - Rear Carri, Bolt,disk,6x17, Right Stay. Backrest.
In this schematic the "Bolt,special,6x25" is used most often.
The most reasonably priced component used on the Vtx1800c 2003 (3) France Backrest - Rear Carrier Stay is the Nut,flange,6mm.