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Heavy loads or trailers can make the rear end squat and the steering feel loose. The LoadLifter 5000 Ultimate air springs add up to 5,000 lbs of load-leveling capacity to keep things level and steady. With air pressure adjustable from 5 psi to 100 psi, you can dial in just the right amount of support for safe, confident braking and steering when hauling or towing.
Each air spring has a closed-cell urethane jounce spring inside that kicks in when needed to absorb bumps and road shock. These internal jounces engage progressively—the more weight you carry, the stiffer they get—so your ride stays controlled without jarring over rough pavement. Even if an air spring loses pressure, the jounce keeps your suspension protected and your trip on track until you can air back up.
The 2-ply, fabric-reinforced rubber air springs are built for long life under real load conditions. Instead of steel endcaps that can rust, these use high-strength Zytel nylon endcaps that are lighter, stronger, and corrosion resistant. Air Lift’s exclusive roll plates protect the bags from moving parts under the vehicle and increase the surface area for a better ride at lower air pressures.
Installation is straightforward with included brackets, hardware, air lines, and manual inflation valves. Mount the valves on your bumper or another easy-to-reach spot and pump in air when it’s time to tow or haul. The system can also be upgraded later with a compressor and gauge if you want in-cab control. Either way, once installed you’re ready to adjust for any load without giving up everyday comfort.
Customer Satisfaction Score:
76% were satisfied with this product
24% of customers were not satisfied
Ratings & Reviews
Claire H.
8/11/2026
Glad to hear the install went smoothly! Thanks for the suggestion on the brake line/ABS brackets too. Definitely something that could make a good kit even better!
Brooke M.
3/24/2025
Happy to hear these are getting the job done! Your set up looks great, and man! What a beautiful picture. Blue, sunny skies, green grass, a cool breeze (I'd wager) perfect day to hitch up the trailer and get some work done!
Matt
3/24/2026
Been great! I really don’t like the internal jounce stops though. When you are unloaded and running lower bag pressure, a dip or bump will hit the bump stops really hard and jar your passengers in the backseat. It’s almost too uncomfortable to ride in the backseat now. As for the loaded and high pressure performance it’s great! Great handling and no sag at all when towing.
Mike L.
8/19/2026
Nice job Debbie, please let us know how they handle your trailer!
Kate F.
1/21/2026
Install looks fantastic Lloyd! Glad to hear they helped with the side to side movement. What kind of trailer are you going to be towing with the new set-up? Fun camper, work trailer?
Nick S.
1/5/2026
That is great to hear, even with some modifications I am glad this is what you were wanting. That truck bed camper set up looks awesome. Do you have any big trips planned this year?
Gwendolyn Y.
7/23/2025
That’s a pretty clever spot for the air fittings, I’m definitely taking note for the future! Also, if you ever run into instructions where the images are hard to see, feel free to reach out. We’re happy to email you a clearer digital copy anytime!
Brooke M.
5/30/2025
What all did you end up having to do to the brackets to get them to fit, if you don't mind sharing?
Brooke M.
6/2/2025
Emil
5/26/2026
Still good
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Tanner @.
8/12/2026
Product works great and helps level the truck during towing. I have noticed a difference in the amount of travel my back wheels have when offloading. But I knew that would be a sacrifice.