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When the rear end starts to sag under a heavy trailer or loaded bed, these LoadLifter 5000 Ultimate air springs step in with up to 5,000 lbs of load-leveling capacity. By sharing the weight across all four wheels, the system restores proper ride height so steering, braking, and headlight aim stay right where they should. The extra support helps keep your suspension from bottoming out and takes the stress off your factory components when you’re hauling or towing.
Air Lift built a jounce spring right inside each air bag to soak up bumps and rough roads. These closed-cell urethane jounces engage progressively—the more weight you add, the stiffer they become—so you keep a stable ride without harsh rebound. They even help if air pressure drops, acting as a built-in safety backup that temporarily supports the load until pressure is restored.
Every load is different, and this setup lets you tune the ride to match. Run as low as 5 psi for a smoother drive when empty, or bump it up toward 100 psi for max support when fully loaded. Each side can be adjusted independently through included manual inflation valves and lines, making it easy to level out uneven loads side to side or front to back.
Each air spring uses 2-ply fabric-reinforced rubber with high-strength Zytel nylon endcaps that won’t rust or corrode like steel. Air Lift’s exclusive roll plates guard against damage from moving parts and increase surface area for better spring performance at lower pressures. The urethane jounce inserts need no maintenance and hold up in both hot and cold conditions, giving you dependable performance trip after trip.
Everything needed for installation is in the box—mounting brackets, hardware, air lines, and manual inflation valves. The bolt-on design makes it straightforward to mount the springs, inflate them, and get back on the road. You can also add an optional compressor system with in-cab gauges later if you want automatic pressure control without leaving your seat.
Customer Satisfaction Score:
90% were satisfied with this product
10% of customers were not satisfied
Ratings & Reviews
Emil
5/26/2026
Still good
Katrina B.
10/3/2022
We are sad to hear that your order arrived missing the tapping screws. I have sent this information over to our customer service team for them to contact you.
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!
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?
Gwendolyn Y.
5/16/2025
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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Condition: Installed
Notes: Soft installed for a test fit, otherwise in like new condition.
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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?