Provide the rear of your 2005-2020 Ford F-250/350/450/550 Super Duty (See Applications) with more control and improved handling when you add Firestone 4160 Coil-Rite Air Bag Helper Springs. Each Coil-Rite Air Bag Helper Spring can be adjusted independently from side to side to accommodate uneven loads. The Coil-Rite Air Bag Helper Springs fit inside your existing coil springs and eliminate dangerous trailer sway, bottoming out, and squatting. Constructed from durable and elastic polyurethane, the Coil-Rite Air Bag Helper Springs have a carrying capacity up to 2,000 lbs and 70 PSIG per set.
- Can Be Adjusted Independently
- Fits Inside Your Existing Coil Springs
- Constructed From Durable & Elastic Polyurethane