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When your trailer or bed load gets heavy, the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers help your suspension stay level and under control. With up to 5,000 lbs of load-leveling capacity, they reduce rear-end sag and keep your steering, braking, and headlight aim consistent. The system shares the weight across all four wheels, easing the strain on your stock suspension so your truck feels steady even when fully loaded.
Roads can be rough, and loads can shift. Each air spring in this setup has a closed-cell urethane jounce inside that absorbs bumps and keeps you from bottoming out. These internal jounces engage progressively—the more weight you carry, the stiffer they get—so the ride stays stable without feeling harsh. They also act as a safety net if air pressure drops, temporarily supporting your suspension until you can make an adjustment.
No two loads are the same. With air pressure adjustable between 5 psi and 100 psi, you can fine-tune how firm or soft the rear suspension feels. Inflate both sides equally for front-to-back leveling or adjust them separately to even out an off-center load. Manual inflation valves and air lines are included, and a compressor system with in-cab gauges can be added later for on-the-fly control.
These LoadLifter 5000 Ultimate springs are made for real work. The 2-ply, fabric-reinforced rubber air springs are protected by Air Lift’s exclusive upper and lower roll plates that guard against damage and provide a larger rolling surface for better support at lower pressures. High-strength Zytel nylon endcaps are lighter and more corrosion resistant than steel, while urethane internal jounces require no maintenance and hold up in both hot and cold weather.
This kit includes the brackets, mounting hardware, air lines, and manual valves needed to install it yourself using hand tools. The no-drill design uses existing mounting points for a clean fit. Once installed, just pump in air through the valves—typically mounted on the bumper—and you’re ready to haul with a leveled stance and smoother ride.
Customer Satisfaction Score:
96% were satisfied with this product
4% 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!
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Wayne R.
5/22/2020
Never any problems I run about 20lbs when not towing and 75 lbs when the 5 th wheel is hooked up