Upgrade Your Vehicle’s Suspension with Firestone Coil-Rite Air Helper Springs. Customizable Performance for Every Journey. Coil-Rite allows you to control the air pressure in the air helper springs, enabling easy adjustments to accommodate varying loads and road conditions. Whether you’re hauling cargo or navigating rough terrain, you can fine-tune your suspension for optimal comfort and stability with the simple inflation of a tire. Built to Last, Built for Performance. Crafted from durable, elastic polyurethane, Firestone Coil-Rite Air Helper Springs offer years of reliable performance and stability. Per set (not to exceed the vehicle’s GVWR) and a temperature range of 180? F (82? C) to -40? F (-40? C), Coil-Rite delivers consistent performance in any weather condition. Experience Superior Ride Quality with Firestone Coil-Rite. Maximize your vehicle’s load carrying capacity, stability, and overall ride quality with Firestone Coil-Rite Air Helper Springs. Engineered and assembled in the USA, Coil-Rite brings Firestone’s legacy of commercial-grade durability, quality, and reliability to your vehicle’s suspension system. Adjustable air pressure for customized performance based on load and road conditions. Made of durable, elastic polyurethane for long-lasting reliability. Suitable for cars, minivans, light trucks, RVs, and SUVs with coil springs. Easy installation with most kits being no-drill, utilizing factory holes for a quick setup.