Air Lift Air Spring Kit1000Air Lift 1000 air spring kits fit popular coil sprung vehicles, including SUVs, CUVs, vans and some ½ ton pickups. Air Lift 1000 air springs provide up to 1000 pounds of leveling capacity*. Most popular light-to-medium duty vehicles are designed to have a car-like ride, which is great if your vehicle is unloaded. But when towing a heavy load, your vehicle can squat, compromising safety and ride comfort. Simply add air to the air springs when hauling a heavy load to ensure that your vehicle is level and stable. Then, deflate when you are riding empty for ultimate stability and comfort. A level, stable vehicle means better braking, steering and headlight aim. It also reduces sway, porpoising and bottoming out. Air Lift air springs fit inside your coil springs to provide load support when you need it. The air springs are fully adjustable from 5-35 PSI for most applications. Inflate and deflate using included Schrader valve. For optimal convenience, add an Air Lift On-Board Air Compressor system. Our Lifetime Warranty covers the air springs, fittings and all hardware€”other companies cover only the springs. We also offer a 60 day No Questions Asked Money Back Guarantee. The kit includes 2 air springs, air lines and all hardware needed to install, including quick connecting air fittings.2002 Chevrolet Avalanche 1500, 2WD & 4WD, Will not fit factory installed auto leveling option2000 Chevrolet Suburban 1500 1/2 ton , 2WD & 4WD, with coil springs, will not fit factory installed auto leveling option2000 Chevrolet Tahoe, 4 door only, 2WD & 4WD, with coil springs, will not fit factory installed auto leveling option.2000 GMC XL Yukon 2500 3/4 ton, 4WD, with leaf springs, requires 6 inches between tire and frame2003 Hummer H2/SUT truck, 4WD, will not fit factory installed auto leveling option.