Firestone Ride-Rite rear air helper spring kit for Ford F250/F350 (2011–2016) and F450 (2011–2013) provides adjustable air support to improve load-carrying capacity, ride quality and brake effectiveness. The system allows separate side-to-side or front-to-rear inflation adjustments to keep the vehicle level with off-center loads and includes the necessary springs, hardware, air line and inflation valves for installation without drilling on many applications.
Firestone Ride-Rite Air Helper Spring Kit Rear Forde 11-16 F250/F350 11-13 F450 2WD/4WD (W217602597)