4135 - Firestone rear airbags

If you’re looking for a smoother ride for your vehicle that has a coil spring suspension, Firestone Coil-Rite air helper springs are what you need.

Designed to fit inside existing coil springs to create a variable spring rate, Coil-Rite will help level your vehicle and assist with more effective braking and handling, even under heavy loading and adverse road conditions.
Coil-Rite enables you to control the air pressure in the air helper springs so you can make adjustments for varying loads and road conditions.
Spring performance can be altered as easily as inflating a tire.Firestone
Coil-Rite air helper springs are made of durable, elastic polyurethane, providing years of comfort and stability to your vehicle.
The air springs will support 500-1000 lbs. per set (not to exceed vehicle's GVWR).
Coil-Rite Air Helper Springs are designed to work in temperatures between 180 °F (82 °C) and -40 °F (-40 °C).
Designed for stock height coils. Lift coils require modification.
Installation instructions can be found HERE

Fitment Notes:

NOTE: Custom modifications may be required for lifted applications to ensure air bags are properly supported. If using on a lifted application, do not follow Firestone bump stop/jounce cut instructions. You will need to determine where to cut based on your lift amount.