Our most effective and universal design, the Quick Disconnect StableLoad is engineered for all types of vehicles (trucks, vans, commercial vehicles, etc.) with factory lower overloads. The Quick Disconnect StableLoad (patent pending) incorporates a unique design that allows the StableLoad to quickly engage or disengage your overloads, enabling your vehicle to return to the soft original ride in just seconds. Works with or without aftermarket air spring/bags. Lifetime warranty. Proudly made in the USA. Kits include: 4 Stableloads to outfit one truck.