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 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).

Additional Information

Replacement Bellow; For Use w/Kit PN[4157/4146];

Features and Benefits

• Reduce Tire Wear

• Reduce Tire Wear

Firestone Coil-Rite air helper springs mount inside the coils of an existing coil-spring suspension to give your vehicle a boost when it needs it the most. They're constructed from durable polyurethane and allow for adjustable spring rates that are far superior to those of standard coil springs. Installing these helpers will enable your suspension to support an additional 500 to 1,000 lbs. per set. Installation does not require drilling. Order the kit recommended for your application.

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