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Are you looking for a mild lift kit for your Super Duty that you can still drive daily with an aggressive look? Kelderman Air Suspension Systems has developed a 4-6″ lift kit for the 2011+ Super Duty Pickup platform to get your truck up in the air without losing it’s capabilities. By removing the rear leaf springs of the truck, a Kelderman 4-Link Rear Air Suspension allows for the rear of the truck to ride entirely on air suspension. By placing an industrial size air bag above the rear axle and between the factory frame, the 4-LInk Rear system will improve the ride and carrying capacity of your truck. This system includes trailing arms, forward mounting side plates, upper and lower bag plates, pan hard bar, crossmember, and an upgraded rear sway bar w/ end links. Add this kit to the rear of your Super Duty by itself to improve the ride and towing or add our 4-6″ front kit to it to have a full air suspension on your truck! The 4-6″ lift kit is capable of lowering down to approximately a 1″ lift to make it easy to climb in and out of the truck, hook up to trailers, or just to show off what your truck can do! When fully inflated to 4-6″ kit becomes a towering 10″ lift! Designed for 35-37″ tires, this 4-6″ Air Suspension Lift Kit provides you the ride quality that you want for a daily driver with the looks you deserve.