Firestone 4186 Coil‑Rite Rear Air Helper Springs Kit for 08-14 GM SUV Autoride

The Firestone Coil-Rite Air Helper Spring Kit Rear is a performance upgrade designed for vehicles with coil spring suspensions. This kit features air helper springs that fit inside existing coil springs to provide a variable spring rate, helping to level the vehicle and improve braking and handling under heavy loads or challenging road conditions. Made from durable, elastic polyurethane, these springs support 500-1000 lbs per set (not exceeding the vehicle's GVWR) and are engineered to maintain stability and comfort over a wide temperature range from -40°F to 180°F. The Coil-Rite system allows for easy air pressure adjustments, enabling drivers to fine-tune suspension performance as simply as inflating a tire, ensuring optimal ride quality and load support.

Designed for 2008-2014 GM SUVs with coil spring suspensions, this rear kit is suitable for vehicles that require leveling and load assistance. It is compatible with a variety of heavy-duty applications, including towing and hauling, where improved stability and ride comfort are essential. The installation involves fitting the air helper springs inside existing coil springs, providing a straightforward upgrade for enhanced suspension performance. The kit supports varying load conditions and adverse road environments, making it ideal for daily driving, towing, and off-road use where adjustable suspension support is beneficial.