The component with the lowest price in the SEAT (GS750N schematic is the Pin.
Parts such as the Seat (gs750n: Pin, Bolt, Screw, Lock Washer are included in the Gs750c 1977 (b) Usa (e03) Seat (gs750n parts fiche.
The Cushion is the most widely applied product in the GS750C 1977 (B) USA (E03) SEAT (GS750N ( three times ).