Red Series - 2″ Lift (Coil Rear).
The Polyair Red Series is a range of load assist air bag kits designed for coil sprung vehicles. Fitting inside the rear coil springs, they provide adjustable air support to prevent rear-end sagging when loaded or towing. They suit 4x4s, SUVs, cars, hot rods and caravans across both standard and raised applications.



Designed to sit inside the coil springs, the Red Series lets you tailor support to different load types and weights simply by adjusting air pressure. A large range of sizes covers many vehicles, and optional wireless compressor kits allow on-the-go inflation and deflation from a handheld controller or mobile app. Single-path kits suit evenly distributed loads, while dual-path kits control each air spring independently for uneven loads.