The 16.5" wide driver bucket sits you at the ideal cruising angle and is one of several design improvements over the stock seat. Available with or without a fully adjustable and easily removable driver backrest. Pair the solo with a matching passenger seat that's fully supported by Mustang's unique internal steel support wings. Recessed Passenger seats are designed for use with the built-in driver backrest. for seats without a built-in driver backrest, the 14" wide passenger seat extends forward for added driver back support.