Some items from this specific schematic: Bolt,seat Fr, Cushion, Seat Assy(black), Washer Comp,frame Cover.
The most reasonably priced component used on the Gsx1300rz Hayabusa 2005 (k5) Usa (e03) Seat (model K7) is the Washer(6.5x20x1.6).
The thirty Gsx1300rz Hayabusa 2005 (k5) Usa (e03) Seat (model K7) component parts are all listed in this schematic.