Air bags do an excellent job keeping your truck level under heavy loads—thus providing better overall control. Install these suspension wonders on your lifted truck with Air Lift air bag spacers. Each spacer kit is designed to be used for one axle and features 1 in. tall molded composite disks that lock together for different heights. For better weight distribution, handling, and safety, install Air Lift air bag spacers and the load-leveling air bags best suited for your application (airbags not included).