Offering up to 5 000 pounds of load-leveling capacity the LoadLifter 5000 Ultimate kit from Air Lift will make towing and hauling with your Toyota Tundra a comfortable and stress-free experience. For the ULTIMATE ride comfort and protection our fully adjustable air springs are the perfect partner for your vehicle helping to eliminate issues you might face while towing including squat poor headlight aim trailer sway body roll and bottoming out. What sets the LoadLifter 5000 Ultimate apart from other air spring kits is the built-in internal jounce bumper. The Air Lift exclusive jounce bumper inside the air spring replaces the factory jounce bumper and is completely maintenance free running safely with zero air pressure. This added feature makes this kit the ULTIMATE in ride comfort and protection. Installing the kit is a simple process requiring only common hand tools and no frame drilling. The LoadLifter 5000 Ultimate kit comes with clear easy to follow full-color instructions. As the leader in air suspension products for over 75 years Air Lift is committed to delivering quality load support products that fit work and 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. With a Limited Lifetime Warranty and 60-Day Ride Satisfaction Guarantee along with a dedicated in-house Customer Service Team you can purchase this kit with peace of mind. Whether it is towing or hauling the LoadLifter 5000 kit from Air Lift will give you the ability to use your Toyota Tundra with added safety and comfort.