Firestone Ride-Rite air helper spring kit for 2013–2020 Ford Transit 250/350 SRW adds adjustable air support to improve load carrying, stability, and ride quality. The kit includes both left and right commercial-grade air springs, upper and lower brackets, DOT-rated tubing, and hardware. Most Ride-Rite kits install using factory holes with a typical 1–2 hour fitment and allow side-to-side or front-to-rear pressure adjustment.
Firestone Ride-Rite Air Helper Spring Kit 13-20 Ford Transit 250/350 Single Rear Wheel (W217602621)