Air Lift adjustable air helper springs level your load and give your Half-Ton truck a safer more comfortable ride. Air springs are easy to install between your axle and the vehicle frame. Just add air when towing or hauling a heavy load and reduce air pressure when unloaded they are fully adjustable for a great ride. Air Lift air springs eliminate sag sway and bottoming out. They are made with rugged durable components for long reliable service. LoadLifter 5000 Heavy Half-Ton adjustable kits are Air Lift's heaviest-rated kits for hauling or towing heavy loads. They have leveling capacity right up to the manufacturer's recommended Gross Vehicle Weight Rating and are air adjustable from 5 to 100 PSI. LoadLifter 5000 Heavy Half-Ton adjustable kits fit such popular vehicles as 1/2 ton and one-ton pickup trucks many Class A B & C motor homes and commercial trucks and other severe uses. They also come standard with a limited lifetime warranty and an exclusive 60 day ride satisfaction guarantee.