The Air Lift 57398 Loadlifter 5000 Helper Spring Kit is designed specifically to fit Ford F-250/350 4WD's from 2005 - 2010 that come with an in-bed hitch. This reliable and user friendly solution allows for up to 5,000 lbs of leveling capacity and air adjustable from 5 to 100 PSI. Installations and system operations are made simple with the help of a quick connecting, easy-to-use air fittings. To ensure comfortable ride quality, roll plates are included as part of the kit for added protection against the air springs and with their built like a tire design reinforced by 2-ply fabric this product offers maximum strength durability. If you’re looking for a heavy duty air spring suspension system tailored specifically to your truck the Air Lift 57398 Loadlifter 5000 Helper Spring Kit is the perfect choice!