5,000-lb Capacity. LoadLifter 5000 Ultimate air springs have internal bumpers, so you get the adjustable load support of air springs and the comfort and reliability of jounce springs. Jounces also work as a fail-safe if air springs lose pressure. Great Prices for the best vehicle suspension from Air Lift. Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle part number AL88388 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Air Lift Vehicle Suspension
Highlights
Custom Fit for Your Vehicle: Mounts to existing attachment points
5,000-lb Load Support: Keeps your truck level and steady when towing or hauling heavy loads.
Safer Braking and Steering: Reduces rear sag so handling and headlight aim stay consistent.
Smooth Ride Control: Internal jounce bumpers absorb bumps and prevent bottoming out on rough roads.
Custom Air Adjustment: Fine-tune from 5–100 psi to balance uneven loads or improve ride comfort.
Durable, Leak-Free Design: 2-ply rubber bags with Zytel endcaps and roll plates extend suspension life.
Features to know about
Keep the Truck Level and Stable: Up to 5,000 lbs of Load-Leveling Support
When you hook up a trailer or load the bed heavy, sag in the rear suspension can throw off your steering, braking, and headlight aim. The Air Lift LoadLifter 5000 Ultimate air springs add up to 5,000 lbs of load-leveling capacity to keep your ride level and steady. By distributing weight evenly to all four wheels, they cut down on squat, bottoming out, and sway so the truck feels solid and in control under load.
Ride Comfort That Adjusts to Every Trip: 5–100 psi Air Pressure Range
Not every haul is the same, and that’s where adjustable air pressure makes all the difference. These air springs can be tuned from 5 psi up to 100 psi for the exact support you need. Pump them up for towing or hauling, then drop the pressure back down for everyday driving. Each spring can be inflated independently for side-to-side leveling when loads are uneven. Manual inflation valves are included for simple setup and pressure checks whenever you need them.
Built-In Jounce Springs Add Safety and Comfort
Each bag has an internal urethane jounce spring that steps in when air pressure is low or a big bump hits. The jounce springs smooth out rough roads, reduce sway in corners, and help prevent bottoming out. If air pressure drops completely, they act as a fail-safe to protect your suspension until you can top off the bags again. Because they engage progressively—the more weight you add, the stiffer they get—you’ll notice a smooth transition from comfort to control as loads change.
Durability That Outlasts Heavy Use
These air springs are made with 2-ply fabric-reinforced rubber and corrosion-proof Zytel nylon endcaps that are lighter and stronger than steel. Air Lift’s exclusive roll plates guard the bags from rubbing against moving parts and boost their load capacity. The urethane internal jounces need no maintenance and handle both hot and cold conditions without issue. With high-strength brackets, hardware, and a lifetime warranty behind them, this setup is built for years of towing and hauling.
DIY-Friendly Setup with Onboard System Compatibility
The kit comes with mounting brackets, hardware, air lines, and manual inflation valves—everything you need for installation using standard tools. The valves are typically mounted on the bumper for easy access. If you want hands-free control, you can add an on-board compressor system later; the springs are compatible with both wired and wireless setups for adjusting air pressure right from the driver’s seat or smartphone.
Specs
Weight and Capacity
Load-leveling capacity: up to 5,000 lbs
LoadLifter 5000 Ultimate springs will not increase your vehicle's weight-carrying capacity.
Do not exceed the manufacturer’s recommended weight limit.
Adjustability
Adjustable air pressure: 5 psi - 100 psi
Warranty
Lifetime warranty
60-Day satisfaction guarantee
88388 AirLift Load Lifter 5000 Ultimate Air Springs with Internal Jounce Bumpers - Rear Axle
Great instructions and easy installation! Fit perfectly! Loaded my tractor to test them out and they completely leveled my sagging truck with 42psi. 3285110
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.
by:
Brian
05/14/2025
gmc
Sierra
VERY GOOD FIRST IMPRESSION!
I have a 2020 Sierra 1500 AT4. I have the back loaded with a DECKED drawer system full of tools, plus all my gear in tubs for investigating fire scenes. My amazing pickup was nearly riding the bump stops all day. On a bumpy road, it was pretty taxing. Off-road was brutal. After some research I found this kit to fit my AT4 truck, part #88388.
You will need tall jack stands for this project. We ended up bracing ours on the rear leaf spring perches due to exhaust routing.
This is a brand new install, so time will tell as to how it holds up, but I have high expectations. This kit comes with paper instructions that are pretty spot-on. The pictures were helpful, and the instructions are detailed enough for a novice to understand. With one extra set of hands, I installed this kit in about 2 hours. I mounted the single fill valve in my gas-fill area, hidden behind the fuel lid. No bending over to add or release pressure.
After the install, I ran the pressure up to 40 psi as recommended. I got about 2 1/2” of lift out of that. I pulled a trailer home from the shop, and my truck rode like brand new. For my daily cargo, I think 40 pounds is just about perfect. And my tailgate is back at belly button height again. My headlights are shining where they should be shining. My bottomed-out ride is now compliant and comfortable.
The parts seem to be quality, and I had zero fitment issues. The only specialty tool was the T40 TORX tip for removing brackets from the axle front. You need it before you start. This kit is an easy install with a basic 3/8” socket set, a couple box end wrenches, and a couple other basic hand tools. This project should not scare too many people away.
Pro tip: You may think you can do it without taking off the tires. DON’T!! You’ll be pissed off at your truck and anyone nearby. The time savings will be worth it.
Also, the parking brake is on the back axle. Chock the front tires and/or put your rig in 4 low before lifting the back end. 3321398
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?
Brian C.
5/15/2025
@GwendolynY
The trailer was picked up in a pasture and dropped off in another. Both the fetching and delivering were compliant rides. The airbags sure looked small during the install, but they managed my truck and trailer weight with ease and grace. It’s exactly what I hoped for when I purchased this air bag kit. The factory suspension was able to manage the bumps all while NOT having to fumble with the added cargo I pack around.
I give this setup an A+ after driving it for a few days. The highway miles are on par with my truck brand new and empty. I’m very pleased with the product on and off road. I’ve dropped the pressure in the bags to 35 for a comparison, but I know there’s a sweet spot at 40 psi for my working conditions.
Gwendolyn Y.
5/16/2025
@BrianC Thats awesome that the bags were able to meet your expectations. I'd also take it as a win if it drives like new now!
by:
Michael
08/07/2025
Unfortunately these take up most of the wheel travel between the axle and leaf springs and cause bouncing or bottoming. When I run low pressure, I bounce off the jounce supports which is truly jarring. To avoid that, I have to drive with the back of the truck lifted, which gives it a very bouncy ride when unloaded. I wouldn’t buy these with internal bounce bumpers again. 3386449
by:
Thomas
06/18/2024
This is my 2nd airlift springs. Friendly staff fast shipping 3160787
awesome company each trailer makes it easy 3408052
by:
Garrett
05/13/2025
Had them on for 2 days, looked like I lifted the back of my truck with empty bags. Took them off and have been in box since 3320969
by:
Kurt in MN
01/28/2026
2025
Chevrolet
Silverado 1500
2026 Trail Boss and 88388 DON'T DO IT! The resting height of the bag and brackets is 11", fully compressed to jounce bumper 8.75", fully extended 13". The Trail Boss distance from frame to axle pad is 9" (w/o bump stop & OEM spacer). Stock axle travel distance up is about 2.5"-3"(unloaded box). Installing kit 88388 on a Trail Boss will be riding on the jounce bumper for every bump in the road. If you inflate bags to 50% and ride 2" higher in the back, then one would have 2" of axle travel for bumps. DON'T DO IT! 3481979
Mike L.
1/28/2026
I'm sorry to hear that, Kurt. I see that you've been working with our Customer Service folks, and that they've providing a shipping label so you can return the bags that don't fit. If I can help further, please let me know.
by:
Eric
04/16/2025
Videos on you tube were a big help with the installation 3301624
by:
David
04/19/2020
I had these installed to help with towing a 35 foot camper. Prior to the air bags I would get sway at 60 65. Last trip a had it up to 75 for a bit no sway.782971
by:
Kenneth
03/25/2022
Wrong air lift kit sent back and reordered 1277291
by:
Lukas
06/17/2021
2019
Chevrolet
Silverado 1500
Good quality product. The install instructions are not totally clear. Looked at the video to help with the install. 1067459
by:
Tony
04/22/2025
easy install works great pulling my camper 3306055
by:
Rick
05/13/2025
2025
GMC
Sierra 1500
I called didn’t have to wait long on the phone and she answered my question said you need this kit and she was very pleasant. Thank you. 3321052
by:
Chris
05/10/2021
2021
Chevrolet
Silverado 1500
Great product. Easy install and it helps when pulling the travel trailer. 1033463
by:
Mark
06/30/2021
Worked wonderful, easy install.1080312
Mark
7/1/2022
Great, exactly what I needed.
by:
Brian
03/26/2025
2020
Chevrolet
Silverado 1500
3286465
Brian B.
3/26/2026
After about 3 weeks I called the manufacture for tech support because the track was riding so ruff. They sent me a different kit that was supposed to be better suited for my needs. After two weeks I removed the air bags and threw them away. The truck road so ruff when not towing that I did not want to drive it anymore. This is a 12-ton truck that rode ruffer with the air bags then any 1-ton truck that I had ever ridden in. To recap I pulled them off and threw them away and got a weight distribution hitch.
Air lift offers their basic LoadLifter 5000 Air Helper Springs # AL57388 and the Ultimate Springs # AL88388 which fit your 2024 GMC Sierra 1500 AT4. I would recommend installing the Ultimate system as they include the internal jounce bumpers inside the air springs. These greatly help to reduce bouncing when towing heavy loads and they can also work to protect the air springs from being pinched should you have a sudden deflation.
The Air Lift WirelessAIR Compressor System # AL74000 will... view full answer...
Hello Mitch, thanks for getting in touch. The 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers item # AL88388 will not work with the adaptive ride control on your 2025 GMC 2500.
We are only aware of one air bag kit that will work with the adaptive ride control, and that is the Firestone Ride Rite # F2609. We have confirmed this with the techs at firestone, as well as with a few of our own customers who have successfully completed the install.
I also recommend you add an... view full answer...
Hello David, thanks for getting in touch. The 2019 GMC 1500 AT4 has a 2" lift, and the # AL88388 kit you mentioned has taller brackets to fit the 2" lift. I looked up the X31 model and it does say it has offroad suspension, but it didn't mention any lift, or say exactly how much lift is added with this model. If the X31 has the same 2" lift as the AT4 model, the # AL88388 kit will fit. If it is not a 2" lift use the # AL88288 instead. view full answer...
Hey Dwight! For your 2023 GMC Sierra 1500 AT4, you will want to go with the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers item # AL88388. This set of air bags is designed specifically to work with the lift that comes with the AT4 models.
The Air Lift item # AL88388 has the built in jounce bumpers you requested and can be ran with 5 psi - 100 psi. It'll sit just fine at 0 psi though. There's no sets that will be functional at 0 psi, plus if you go with... view full answer...
Hey Dave!
Yes, but you will need to install the Air Lift Loadlifter 5000 Air Helper Springs # AL88388 on your 2024 Chevrolet Silverado 1500 differently.
What you will need to do is drill two holes on the bottom of the frame and use the included hardware to bolt the upper mounting brackets to the bottom of the frame of your truck. This will allow it to fit and work with 5th wheel mounting brackets.
The B&W Custom Installation Kit w/ Base Rails for 5th Wheel Trailer Hitches # BWRVK2504... view full answer...
No, there is not Michael. I checked with SumoSprings and none of their helper spring kits fit the Trailboss model of the 2025 Chevrolet Silverado 1500.
There's actually not too many suspension upgrade options that are compatible with the Trailbosses. The best solution I have for you is to install the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers item # AL88388. These air bags have a 5,000 lbs capacity that will level out the rear end of your Silverado... view full answer...
Hey TIm! That is correct, the Firestone are bags are not compatible with the diesel engine. What I recommend instead is the Air Lift LoadLifter 5000 # AL88388. These are specifically designed for AT4 models, and they don't have that diesel restriction.
I also recommend adding an air compressor like the Air Lift WirelessONE Compressor System # AL25980EZ. This will allow you to control the pressure in the air bags from the cab of your truck no matter where you go.
What are you towing/hauling... view full answer...
Hello Jeremy, thanks for reaching out. You are on the right track with the Air Lift # AL88388 and Firestone # F2609 being the correct options for your 2020 GMC Sierra AT4. Since your truck has an additional 2" lift on top of the AT4 stock lift, you will need an additional spacer regardless of which kit you go with.
The Air Lift # AL88388 is designed for the AT4 stock 2" lift, but an additional spacer would be needed since you have additional lift. The air lift 2" spacer is part # AL52420.
The... view full answer...
Hello Ty, thanks for getting in touch. For your 2022 GMC Sierra 1500 AT4X I recommend the Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88388. This is made specifically for the 2" lift on the AT4 model, so it will work great for the AT4X since it has the same 2" lift. They are 5,000 lb capacity bags so they will do a great job absorbing shock and keeping your truck level when you tow. I have linked our install video for you below. Feel free to reach out if you have any other... view full answer...
Hi Michael,
you're right, Firestone’s website does show that their Ride-Rite kit # F2609 doesn’t fit the 2025 GMC Sierra 1500 AT4 with the diesel engine, and while that does seem a bit odd at first, it’s actually due to clearance issues with the 3.0L Duramax exhaust setup.
But no worries, you’re definitely not out of luck! There are other awesome suspension enhancement options that’ll still give you the support and stability you’re looking for like the Air Lift LoadLifter 5000 Ultimate... view full answer...
Hey Marcus, thanks for reaching out!
What you're looking for is the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers # AL88388. This is the specific model designed for the Trail Boss version of your 2023 Chevy Silverado 1500 you have.
I'm linking a photo of this kit installed on a 2021 Silverado as well as out install video for your reference.
What is the appeal of the internal jounce bumpers for you? Air Lift advertises them as a fail-safe in the event... view full answer...
Yes, it will! I checked with Air Lift and their LoadLifter 5000 Ultimate Air Helper Springs item # AL88388 will indeed fit the 2022 GMC Sierra 1500 with the Duramax Diesel engine. These air bags have the same 5,000 lbs load leveling capacity.
I have linked an installation video below so you can see how to get them set up.
I recommend adding the Firestone Air Command item # F2610 to your truck. This onboard compressor will allow you to adjust the PSI in your air bags from your phone. view full answer...
Hi Chris!
I can definitely tell you the differences between the three Air Lift LoadLifter systems.
Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle # AL88288
-2019 to 2026 GMC Sierra 1500 2 Wheel Drive
2019 to 2026 GMC Sierra 1500 4 Wheel Drive
2022 to 2022 GMC Sierra 1500 Limited 2 Wheel Drive
2022 to 2022 GMC Sierra 1500 Limited 4 Wheel Drive
2019 to 2026 Chevrolet Silverado 1500 2 Wheel Drive
2019 to 2026 Chevrolet Silverado 1500 4... view full answer...
Hey Terry, thanks for reaching out!
There are a few different options for your 2023 Chevy Silverado 1500 ZR2 but the correct kit just depends on how you're using the truck. The Air Lift LoadLifter 5000 kit is the only air bag kit designed to fit your vehicle and I recommend using their Ultimate kit because it come with internal jounce bumpers that make sure the bags are safe even in really rough terrain:
- Kit # AL88388 fit Trail Boss model
- Kit # AL88288 does not fit Trail Boss model... view full answer...
Hey Levi, for your 2025 Chevy Silverado 1500 LT I recommend going with the Timbren Suspension Enhancement System # T28MR.
These springs require no maintenance, has an easy install with no air lines necessary, and is great for consistent loads, like your trailer. Timbren does also offer a spacer kit # A25723-90AH00 which you can stack two to cover distance of the 2" block in the rear.
Let me know if there is anything else I can do for you, please feel free to let me know! view full answer...
Hello Jamie, thanks for reaching out. Yes, the Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88388 are correct for your 2024 Chevy 1500 ZR2. The internal jounce bumpers are technically not required, but they are a nice addition to have. Like you said, they act as a failsafe in the event of pressure loss. Losing pressure is rare, but there is definitely a peace of mind factor.
If you plan to tow frequently, I also recommend adding an onboard compressor system like the Air Lift... view full answer...
Hi Danny; I'm sorry to say that the air bags you purchased for your old truck won't fit the 2024 Silverado 1500 ZR2. The ZR2 needs a specific set of air bags which is the # AL88388 if you want them with the internal jounce bumper like the set you already have. If you want them without the jounce bumper you can use the # AL57388. view full answer...
Hey Jeff! I can't see what's in your basket but the Firestone Ride-Rite Air Helper Springs item # F2609 you've been looking at do not fit the diesel models of the 2024 GMC Sierra 1500.
Instead you'll want to use the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers item # AL88388. These air bags have the same 5,000 lbs load leveling capacity and are compatible with your Sierra's diesel engine and with Adaptive Ride Control if your truck has it.
I have... view full answer...
For your 2023 GMC Sierra 1500, I recommend the Air Lift LoadLifter 5000 item # AL57388 over the item # AL88388. Both of these systems are confirmed to fit the AT4 4WD models. They each have a 5,000 lbs capacity that will both support your rear end and level it out when you are towing a trailer or hauling a heavy load in the back. Air bags in general are the best option for suspension enhancement if you don't want to notice them on daily driving.
The main difference between the two is... view full answer...
Hello again Aaron,
Congrats on the new 2026 Sierra Denali! What’s your new favorite feature?
I know that you were looking at the Firestone air bags, but there isn’t a Firestone option that will work with the diesel engine.
My top pick would be the Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle # AL57388. These will work with the diesel engine and the ARC (Adaptive Ride Control). I like how the brackets come in multiple pieces, they take a little more time to assemble, but they... view full answer...
Since your 2021 GMC Sierra 1500 is an AT4 model the correct Air Lift Loadlifter is the part # AL88388 and not what you mentioned as it does not fit that model. view full answer...
First one reason there are so many kits for your 2021 Chevrolet Silverado is due to the Trail Boss coming with a suspension lift right from the factory. So half the available kits can only be used on the Trail Boss trim level.
There are going to be 2 kits that are available. First is the kit I always recommend using the Air Lift LoadLifter 5000 Ultimate. These air bags have internal jounce bumpers which help reduce bounce that you may get from the additional load. The bumpers also help... view full answer...
Mixing and matching the brackets and air springs isn't really recommended but you might be able to get a combination to work. If I were you I would just put the complete # AL88288 kit on since that would fit properly and there wouldn't be any guesswork or trial and error.
If you go with a bag setup that's too tall they would be engaged all the time and the ride quality would be pretty harsh and the capacity and performance would be hard to anticipate and know if it's safe. These kits aren't... view full answer...
For Air Bag air spring kits for your 2021 Chevy Silverado 1500 4x4, you have a few options available:
- Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle # AL57288
- Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers # AL88388
- Air Lift LoadLifter 5000 Ultimate Plus Air Springs w/ Internal Bumpers # AL89388
When comparing these options, the difference between these kits is the construction of the roll plates and air lines. The regular LoadLifter... view full answer...
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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!