Coil-Rite Rear Air Spring Kit for Lexus GX (2003–2023)

The Firestone Coil-Rite Rear Air Spring Kit provides the Lexus GX with additional rear suspension support while retaining its factory coil springs. Designed to accommodate changing vehicle loads, the system allows owners to adjust air spring pressure to help maintain a balanced suspension response, whether driving unloaded or carrying additional cargo and equipment.

The air springs sit inside the existing rear coil springs, creating a variable spring rate that responds to vehicle weight. Under loaded conditions, increased air pressure provides additional support to help manage suspension compression.

Each air spring can be adjusted separately, helping accommodate unevenly distributed cargo. The Coil-Rite air spring system reduces body roll and improves vehicle stability when carrying added weight or navigating rough terrain.

Added suspension support helps maintain a consistent vehicle stance, supporting more predictable handling and braking. The system also helps level headlight beams when hauling, reducing the effects of excessive rear-end sag.

Polyurethane air springs absorb road shock and soften the interaction between the axle and vehicle frame. They moderate suspension movement, reduce excessive compression, and prevent bottoming out under demanding loads.