The Air Lift 57596 Loadlifter 7500XL Helper Spring Kit is the perfect addition to your Ford F-250/350 4WD 2011-2016. With up to 7,500lbs of front leveling capacity, air adjustable springs and reinforced 2-ply fabric for maximum strength, you'll be able to take on even the toughest roads. But these helper springs offer much more than just peace of mind while driving. With up to 5-100 PSI of air pressure, your headlights will always be in the right spot and your brake time and steering performance will be improved due to all four tires firmly staying on the ground; all while lessening the likelihood of bottoming out or porpoising vertically. Say goodbye to petty grievances with uneven tire wear - worry less and drive more with the Air Lift Loadlifter 7500XL kit today!