The Firestone Ride-Rite rear air helper spring kit for 2015–2019 Ford Transit 350 Dual Rear Wheel applications adds adjustable air support to improve load-carrying capacity, vehicle stability and ride quality. Ride-Rite systems use air pressure for load support, reduce inter-leaf friction, and allow side-to-side or front-to-rear adjustment via individual valves. Most kits install without drilling and include all components; typical installation takes 1–2 hours.
Firestone Ride-Rite Air Spring Kit Rear 15-19 Ford Transit 350 Dual Rear Wheel (W217602603)