The Cushion,seat is the most widely applied product in the GSX1100F 1991 (M) (E01 E02 E04 15 16 17 18 21 22 24 25 34 39 53) SEAT ( four times ).
Some items from this specific schematic: Cushion, Cushion, Seat Assembly (silver), Bracket,seat Support,right.
Check out any of the twenty-four Seat components enlisted.