Vehicle Compatibility: These SuperSway-Stops are specifically designed to fit 2006-2013 RAM 2500 & 2006-2020 RAM 3500/4500/5500 models; The SSS-4 pairs seamlessly with your factory suspension system Replaces Contact Pads: SuperStops replaces the traditional contact pads for top overload springs create excessive noise when in contact; Helps the solution for transportation applications with passengers Stops Sway: SuperSway-Stops are engineered to minimize sway and reduce body lean by filling the gap between the top overload spring and the chassis contact points; Ensuring a safer and more comfortable ride Extra Stability: SuperSway-Stops are designed to provide additional stability for trucks equipped with auxiliary top overload leaf springs and air springs; Replace the noisy factory contact pads with damping, noise reducing SuperSilent-Stops Peace of Mind: Proudly made in the USA, these springs require no air lines, compressors or maintenance — just install and drive, backed by a lifetime warranty for long-term peace of mind