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Heavy trailers and bed loads can cause the rear end to sag, throwing off steering, braking, and headlight aim. The LoadLifter 5000 Ultimate air springs add up to 5,000 lbs of load-leveling capacity to keep your truck steady and level when hauling or towing. By distributing weight evenly across all four wheels, they take the strain off your factory suspension so handling stays predictable and braking feels balanced even with serious weight on board.
Inside each air spring is a closed-cell urethane jounce spring that kicks in when air pressure alone isn’t enough. It steps up progressively as the load increases, absorbing bumps and shocks to prevent bottoming out. Because these jounces engage sooner than factory bump stops, they add control and comfort on rough roads while working as a fail-safe if the air pressure ever drops.
Every haul is different, so being able to tune your suspension matters. The LoadLifter 5000 Ultimate system lets you set air pressure anywhere from 5 psi to 100 psi. Inflate both sides equally to level your ride front to back or set each side independently for off-center loads. Manual inflation valves are included and mount conveniently on the bumper or another accessible spot for easy adjustments.
These air springs are made from 2-ply, fabric-reinforced rubber with exclusive roll plates that shield them from moving parts under the truck. High-strength Zytel nylon endcaps replace steel for lighter weight and better corrosion resistance. The combination of durable materials and protective design keeps leaks at bay and extends the life of your suspension system through years of towing and hauling.
Everything needed for installation comes in the box—mounting brackets, hardware, air lines, and manual inflation valves. Just bolt it up, inflate the bags, and you’re ready to roll. The system fits cleanly with compatible mounting brackets and requires only small holes for the inflation valves. Once installed, you can add an optional compressor system later to monitor or adjust pressure automatically from inside the cab.
Customer Satisfaction Score:
67% were satisfied with this product
33% of customers were not satisfied
Ratings & Reviews
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.
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
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?
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Bernie
6/4/2022
Works good Should have come with a T fitting to air up evenly from one location