Super-Cushion air springs for trucks, trailers buses, and cab & seat springs protect cargo, provide constant-level hauling, and deliver long, trouble-free service. Super-Cushion air springs give your trucks, trailers and buses a new high in productivity and long life. They offer a quiet, cushioned ride. Truck, trailer and bus bodies last longer than with steel springs because there is less vibration. The driver rides in greater comfort, becomes less fatigued and stays more alert. Plus cargo has better protection from shock and vibration. Whenever you want to add an axle, Super-Cushion air springs fit right in.