The Firestone Coil-Rite front air helper spring kit for 1991–1996 Ford F-150 fits inside the vehicle’s coil springs to add an adjustable air helper spring. The kit ships with air springs, supports, hardware, air line and inflation valves and requires no drilling. It lets owners tune spring rate by adding or releasing air, helping maintain level stance, improve braking and reduce tire wear under load.
Firestone Coil-Rite Air Helper Spring Kit Front 91-96 Ford F-150 (W237604102)