LoadLifter 5000 air springs from Air Lift were engineered to add load-leveling support for improved handling and reduced bottoming when you’re hauling a massive load in your truck or van. Air Lift patented their first air spring suspension in 1950 and have been an industry leader ever since.
Excellent product! Very simple install! Works great! Not too expensive!
I built a 6'x8' flatbed dump for a 1988 chevy K3500 single rear wheel truck. I loaded (overloaded) it with 4480 lbs gravel. The tires nearly rubbed the bed. I installed 5000 series airlift air bags, and it made all the difference in the world! I highly recommend putting them on a truck used for hauling loads of "stuff." It drives like normal. When its load time, just add air according to big load or small load. I drilled 3 holes in the frame rail. One in the side, the other two in the bottom flat of the rail. The rest of the install was simple bolt on stuff. I was impressed and you won't regret it.