A 16" wide front solo seat sets the driver back for the ideal cruising angle. The optional driver backrest receiver is built directly into the passenger seat, not into the solo. The driver backrest is fully adjustable, easily removable and offers more features than any other backrest on the market. The passenger sits comfortably in a 13" wide bucket that is supported by internal steel support wings to prevent sagging around the edges. Chrome mounting brackets are included. Note: These Mustang seats will fit with Cobra brand Luggage Racks or Kawasaki Fire & Steel™ #K53020-066C if rear seat tab is mounted on top of luggage rack.