The Air Lift 88215 LoadLifter 5000 Ultimate Helper Spring Kit combines the benefits of the LoadLifter 5000 with an added internal jounce bumper within the spring, ensuring unparalleled ride comfort. This system enhances your vehicle's leaf springs to provide up to 5,000 lbs. of front load leveling capacity, maintaining stability and comfort whether your vehicle is loaded or unloaded. The built-in closed-cell urethane foam jounce bumper within the air spring absorbs shocks, eliminates harsh impacts on rough terrain, and safeguards vehicles carrying heavy loads from bottoming out. The air springs are constructed like tires with a tough, 2-ply fabric reinforcement for maximum durability. Additionally, exclusive upper and lower roll plates protect the springs from sharp surfaces and increase load capacity by up to 10%. The kit includes 2 air springs, mounting brackets, air lines, schrader valve, hardware, and installation instructions.