Offering up to 5 000 pounds of load-leveling capacity the LoadLifter 5000 Ultimate kit from Air Lift will make hauling with your Ram ProMaster van a comfortable and stress-free experience. For the ultimate ride comfort and protection our fully-adjustable industry leading air springs are the perfect partner for your vehicle eliminating any issues that you might face. The LoadLifter 5000 Ultimate kit helps to eliminate problems frequently faced when towing and hauling such as squat poor headlight aim trailer sway body roll and bottoming out. With the added stability and weight-distribution that air springs provide you can haul safely knowing that you have optimal braking and steering control. With the ability to adjust the air pressure from 5-100 PSI your Ram ProMaster van can be ready for any weight and any situation (Note: Do not exceed vehicle's GVWR). What sets the LoadLifter 5000 Ultimate apart from other kits is the built-in internal jounce bumper. An Air Lift exclusive the jounce bumper inside the air spring absorbs shock while the air spring eliminates squat sway and bottoming out even on rough roads. This replaces the factory jounce bumper and is completely maintenance free able to run safely with zero air pressure. This added feature makes the kit the ULTIMATE in ride comfort and protection. As the leader in air suspension products for more than 70 years Air Lift is committed to delivering quality load support parts that last. To ensure the highest quality longevity and customer satisfaction the key suspension components including the air springs and all hardware have all been torture-tested to 1 million cycles on our hydraulic test rig the equivalent of 100 000 miles. With a lifetime warranty and 60-Day Ride Satisfaction Guarantee -- not to mention the Air Lift reputation for great customer service and technical support should you run into any snags in the installation process -- you can purchase this kit with peace of mind.