NOTE: Will not work with stock seat. Riders and passengers will definitely find the comfort zone in one of Mustang's four seat styles for the Roadliner and Stratoliner. The deeply pocketed 17.5” wide front bucket sits the driver at the ideal cruising angle. The built-in driver backrest offers more features than any other backrest on the market. On styles without the driver backrest, the 12” wide passenger seat extends forward to provide ample back support for the driver.