Mustang Squareback/Fastback Passenger Seat Kawasaki Vulcan S Two passenger seat options intended to fit the Mustang Squareback/Fastback Solo Seat. The Squareback passenger gives an 8.5 wide seating area and an updated retro look, and the Fastback passenger gives a 7 wide seating area with a sleek, sporty look. Features: 8.5 wide Squareback passenger and 7 wide Fastback passenger area allows for comfortable 2-up riding Hand sewn cover with classic single diamond stitching made from marine-grade expanded vinyl Mustangs proprietary controlled-density foam formula requires no break-in and retains shape and support after years of use Marine-grade fiberglass baseplate for long-lasting support and durability, with polyurethane bumpers to absorb vibration Note: Driver seat sold separately.