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When you’re hauling a full trailer or heavy gear in the bed, the rear suspension can sag and throw off your steering and braking. The Air Lift LoadLifter 5000 Ultimate air springs add up to 5,000 lbs of load-leveling capacity to keep your ride level front to back. With support spread evenly across all four wheels, braking feels stable, tires wear evenly, and headlight aim stays right where it should.
Bumps and dips don’t have to mean bottoming out. Each LoadLifter 5000 Ultimate air spring has a closed-cell urethane jounce spring inside that cushions impacts and takes up slack when air pressure isn’t enough to handle the load. These internal jounces engage progressively—the more weight you carry, the stiffer they get—so the ride stays smooth without harsh jolts or bounce. Even if an air line leaks, the jounce springs act as a backup so you can still carry a load temporarily until pressure is restored.

Every trip is different, but dialing in the right balance is easy. The system lets you adjust air pressure between 5 psi and 100 psi to match what you’re carrying. Run higher pressures for towing stability or lower for daily driving comfort. The kit includes manual inflation valves and air lines that can be mounted on the bumper for quick access. If you want automatic control, it’s also ready for an optional compressor system with in-cab gauges (sold separately).
This setup is made to handle real work for the long haul. The 2-ply, fabric-reinforced rubber air springs are backed by high-strength Zytel nylon endcaps that are lighter, stronger, and more corrosion resistant than steel. Air Lift’s exclusive upper and lower roll plates shield the bags from damage and boost load capacity by spreading out pressure evenly. Quality construction from top to bottom means fewer worries about leaks or wear and a lifetime warranty to back it up.

Installing this system doesn’t require a shop full of tools. The LoadLifter 5000 Ultimate comes with mounting brackets, hardware, manual valves, and lines—all ready to bolt up cleanly over your rear axle. Just mount the springs, run your airlines, inflate them through the valves, and go. Once installed, you’ve got heavy-duty support on demand without changing your truck’s everyday comfort.
Customer Satisfaction Score:
90% were satisfied with this product
10% 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?



Emil
5/26/2026
Still good

Gwendolyn Y.
5/15/2025
Wow, Brian. Thanks so much for your in depth review and experience with installing the air bags. You gave some really solid tips and advice, especially the one about removing the tires. How's the ride now when you're off road?



Brooke M.
5/6/2025
That's pretty awesome, Dan. Thanks for sharing that photo too- it's helpful to see what you're talking about. :) Do you take your camper on any hunting trips?

Brooke M.
5/9/2025
Wow that's great, Slater :) Did you get the travel trailer a year ago too, or have you had it for a while? Any recommended destinations for your viewers at home?
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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.