Firestone Ride-Rite Air Helper Spring Kit Rear Ford F550 / Ram 4500/5500 (W217602404) Programmers & Chips>Programmers & Tuners The knuckle sets are built

The knuckle sets are built for the Ford Racing IRS Mustang Cobra hub assemblies

Installation is fast and easy – no drilling or special hardware required

This heat shield requires no assembly and uses factory mounting locations for fast and easy installation

Tuned for torque management and shift points/firmness

Firestone Ride-Rite Air Helper Spring Kit Rear Ford F550 / Ram 4500/5500 (W217602404) Programmers & Chips>Programmers & Tuners The knuckle sets are builtFirestone's most popular and comprehensive air helper spring line, Ride Rite kits can be installed on most light trucks, motor homes, RVs, SUVs and vans. Each application is specifically designed to maximize the vehicle's safe load carrying capacity, stability, ride quality and brake effectiveness. Firestone Ride Rite air helper springs provide load support through the use of air pressure that can be adjusted for changing loads. They enhance the ride