This Air Lift LoadLifter 5000 Ultimate air spring kit fits a Silverado/Siera 2017-2018 and many other applications that match the given suspension design Short Bed ONLY. This kit also features an internal jounce bumper for maximum ride comfort. AirLift opted to use two-ply reinforced commercial-grade bellows, which mount between the spring and frame and can be inflated from 5-100psi and capable of leveling loads up to 5,000 lbs.. This kit includes bellows, jounce bumpers, air lines, fittings, brackets, mounting hardware, and is an OPEN box unit! Please review the photos before making your purchase. Thank you for choosing EKG!