Product Description Lowering a truck reduces suspension travel and load carrying capacity, but don't panic... the SlamAir™ air springs for lowered vehicles can solve these problems. SlamAir fits most lowered trucks with a 2, 4 or 6 inch drop, including trucks with flipped axles and notched frames. Each kits includes everthing you need to install the system on your vehicle. An easy to install kit that's tough to beat featuring ultra high-strength nylon comosite end caps which is as strong as steel, weighs less and will never rust or corrode. With Air Lift's exclusive 60 Day Ride Satisfaction Guarantee, they guarantee you'll be happy with the improvement in road comfort and load handling. If you're not satisfied, you may remove the product and return it to your dealer for a full refund of your purchase price within the first 60 days after your purchase. Best Warranty in the Business - Air Lift Company warrants that the SlamAir air spring system will be free from defects in workmanship or materials for the lifetime of the vehicle of original installation. This does not include installation or other service charges for replacement. From the Manufacturer Restore load carrying capacity and eliminate bottoming out by adding SlamAir air helper springs to your lowered vehicle. SlamAir kits supplement a lowered truck's leaf springs to provide adjustable spring rate for ride comfort, safety and variable loads. Easy to install between your existing springs and the vehicle frame, they are made with rugged, durable components for long, reliable service. Air Lift SlamAir kits fit most lowered trucks with a 2 – 6 inch drop, including trucks with flipped axles and notched frames. Application Information This SlamAir kit, number 59210, fits the 2004 to 2009 Ford F-150, 2-wheel drive (new body, excludes Heritage models). This kit fits vehicles with a 2 – 6 inch drop. SlamAir Lowering a truck reduces suspension travel and load carrying capacity. Adding SlamAir helper springs solves these problems economically by restoring load carrying capacity and eliminating bottoming out. SlamAir helper springs supplement the lowered truck's leaf springs to provide adjustable spring rate for ride comfort, safety and variable loads. For even more convenience, add a driver-controlled compressor system and raise the rear on-the-fly for speed bumps or sloped driveways. SlamAir systems are available for most lowered trucks with a 2 inch to 6 inch drop, including trucks with flipped axles and notched frames. They are air adjustable from 5 to 100 PSI and come with quick connecting, easy-to-use air fittings. All kits are engineered to be easy to install and come with Air Lift's exclusive alignment tool and a fully illustrated instruction manual. Why Air? Factory suspensions must compromise between ride comfort and load hauling capacity. Soft factory suspensions can't carry heavy loads, and heavy steel springs ride rough, especially when the vehicle is unloaded. Only air springs can support your heavy loads and provide a great ride. Air Lift adjustable air springs solve these common problems by allowing you to tune your suspension under all load and road conditions. Just add air when towing or hauling and then remove air for a softer ride when unloaded. Eliminate these common load and towing problems for good when you use Air Lift air springs: Sag – Proper weight distribution to all tires improves steering, braking and tire wear. This is especially important while towing: adjust the air springs to accept the tongue weight of the trailer or other heavy loads. Headlight aim – Only level and stable vehicles provide safe and proper headlight aiming – critical for night driving safety. Rough ride – Air Lift's progressive spring rate soaks up bumps, keeping tires on the road for better handling. Bottoming out – Air Lift springs restore normal ride height when heavily loaded or towing, reducing suspension wear and eliminating crashing on bumps. Sway and body roll – Air springs increase spring rate and vastly improve vehicle stability. When towing trailers, the air springs permit precise vehicle height adjustment for exact alignment, reducing trailer sway. Less roll and sway means a safer and more comfortable ride. Suggested Accessories For maximum convenience and leveling on-the-go, nothing beats an Air Lift on board air compressor system. Automatic or dash-mounted, it quickly adjusts your vehicle for changes in load or road conditions. Air Lift compressor systems are the most advanced in the industry and work with all brands of air springs. Best Warranty in the Business Air Lift Company warrants that the SlamAir air spring system will be free from defects in workmanship or materials for the lifetime of the vehicle of original installation. This does not include installation or other service charges for replacement. Exclusive 60 Day Ride Satisfaction Guarantee Air Lift guarantees you'll be happy with the improvement in road comfort and load handling. If you're not satisfied, you may remove the product and return it to your dealer for a full refund of your purchase price within the first 60 days after your purchase. Air Suspension Solutions that Fit, Work and Last Air Lift Company has been developing air spring suspension products for almost 60 years. The versatility of Air Lift air springs was proven during the early years of stock car racing. Air Lift products were used by most of the stock car racing teams for twenty years and the sponsored cars were among the toughest competitors on the NASCAR Grand National Circuit. Today, Air Lift has won more SEMA (Specialty Equipment Market Association) awards for air spring development products than any other company. Air Lift products are sold throughout the world and can be engineered to fit almost any coil or leaf spring suspension. The extensive product line includes everything from air helper springs for cars, vans and trucks to full air suspension replacement and control systems for recreational vehicles, emergency vehicles, hot rods and lowered performance vehicles. Quality and Performance – the Air Lift Difference As of February 2007, Air Lift Company is proud to be ISO 9001:2000 certified. ISO 9001:2000 applies to organizations which follow rigorous quality standards, and are committed to continuous improvement. Air Lift Company is dedicated to making suspension products that fit, work, and last.