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When you’re hauling a heavy trailer or loading down the bed, the rear end doesn’t need to sag or throw off your steering. The Air Lift LoadLifter 5000 Ultimate air springs add up to 5,000 lbs of load-leveling capacity to keep your vehicle level front to back and maintain safe headlight aim. The springs help distribute weight evenly across all four wheels for better braking and stability when towing or carrying uneven loads.
Every load is different, and this system lets you dial in the exact support you need. With adjustable air pressure between 5 psi and 100 psi, you can run higher pressure for towing or full loads and drop back down when driving unloaded for a smoother ride. Each air spring can be adjusted independently for side-to-side leveling of off-center loads, keeping the ride balanced no matter what’s in the back.
Built-in urethane jounce springs take over when air pressure is low or when a bump catches you off guard. Each jounce spring engages progressively—the more weight you add, the stiffer it becomes—absorbing shocks and reducing sway without a harsh feel. If the system ever loses air pressure, the jounces temporarily carry the load so your suspension stays protected and stable until you can reinflate the bags.

The LoadLifter 5000 Ultimate air springs use 2-ply, fabric-reinforced rubber for long-lasting performance under heavy use. Zytel nylon endcaps are lighter, stronger, and more corrosion resistant than steel, while exclusive roll plates protect the air springs from damage and increase their load capacity. Urethane internal jounces require no maintenance and handle hot or cold temperatures with ease.

You don’t need a full shop to get these installed. The kit includes mounting brackets, hardware, manual inflation valves, and air lines—everything needed to mount and inflate the system using basic tools. Manual valves can be positioned on the bumper for easy access, and if you want in-cab control later, a compressor system with gauges can be added separately for quick pressure adjustments on the go.
Customer Satisfaction Score:
85% were satisfied with this product
15% of customers were not satisfied
Ratings & Reviews

Mike L.
8/19/2026
Nice job Debbie, please let us know how they handle your trailer!

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.

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.

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!

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?


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Condition: Surface Scratches
Notes: Item has cosmetic scratches. otherwise in like new condition.
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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!