Parts such as the Seat: Damper Rubber, Bolt,10x28, Bolt,10x32, Seat-assy,dual are included in the Kh100g5 1984 Usa Seat parts fiche.
The Seat is made up of components including this Seat-assy,dual which is the most expensive.
The Bolt,10x28 is the lowest priced item on this Seat schematic.