1,000-lb Capacity. Upgrade your vehicle's rear coil spring suspension with this kit. Molded polyurethane air springs fit inside your existing coil springs for added support when hauling heavy loads. Improves handling, braking, and overall ride. Great Prices for the best vehicle suspension from Air Lift. Air Lift 1000 Air Helper Springs for Coil Springs - Rear part number AL94VJ can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Air Lift Vehicle Suspension
- AL94VJ
Highlights
Custom Fit for Your Vehicle: Mounts to existing attachment points
1,000-lb Load Support: Keeps your vehicle level under heavy loads for steadier, safer handling.
Better Steering and Braking: Prevents rear sag so braking stays consistent and headlights aim right.
Smoother Ride on Rough Roads: Reduces sway and absorbs shock for a more stable, comfortable trip.
Easy DIY Inflation Control: Adjust 5–35 psi manually to fine-tune support for towing or daily driving.
Long-Lasting Polyurethane Design: Durable molded springs resist leaks and stand up to daily hauling.
Features to know about
Keep the Rear End Level and Stable: Up to 1,000 lbs of Load-Leveling Support
Heavy loads can make the rear of your vehicle sag, throwing off steering, braking, and headlight aim. The Air Lift 1000 Air Helper Springs for Coil Springs add up to 1,000 lbs of load-leveling capacity to keep your ride height where it should be. By fitting right inside your existing rear coil springs, these molded polyurethane air springs share the load with your factory suspension so your vehicle stays level, even when hauling or towing.
Fine-Tune Ride and Handling: Adjustable Air Pressure from 5 psi to 35 psi
Every load is different, and these helper springs adjust to match. You can manually set the air pressure anywhere between 5 psi and 35 psi to balance comfort and support. Inflate both sides equally for even loads or use dual air lines to fine-tune each spring separately for uneven cargo. That flexibility helps keep handling predictable and steering responsive whether the bed is empty or fully loaded.
Smooth Out Rough Roads: Diminishes Sway and Absorbs Road Shock
When bumps or sway start to throw the vehicle around, these air springs take the edge off. By cushioning impacts and reducing suspension strain, they help absorb road shock so you feel fewer jolts through the chassis. With less bounce and sway, the ride stays more stable on highways, winding roads, or when pulling a trailer over uneven pavement.
Simple DIY Setup: Designed for Straightforward Installation
This kit installs inside your existing rear coil springs using standard tools. It comes with two air springs, two heat shields, tubing, Schrader valves, and hardware so you can route the airlines where you want—often through the bumper for easy access. Add a compressor system later if you’d like automatic inflation control, but even as-is, setup is straightforward and easy to maintain.
Specs
Weight and Capacity
Load-leveling capacity: up to 1,000 lbs
Pressure
Adjustable air pressure: 5 psi - 35 psi
Warranty
Lifetime warranty
60-Day satisfaction guarantee
60804 AirLift 1000 Air Bag Suspension Support System for Coil Springs - Back
This is my second set of air lift , first have been on a 2005 Toyota 4Runner for the past 9 years and still work great. This set I just installed on my new to me 2016 Toyota 4Runner and look forward to many years of towing service with them. 3633148
by:
Chicken in a biscuit
08/08/2022
I’m very happy with the air coils. I’ve had them for two years now without any issues. I originally installed them because I tow my boat with 2016 4runner . The rear end would sag quite a bit when towing. I installed these air coils and immediately corrected the situation. What I didn’t know is how much it would improve daily driving. The truck handles much better now since installing. The air coils have completely removed anybody roll. Giving me much more confidence when taking corners. I installed the Onboard air compressor, figuring I would be raising and lowering air pressure in the coils when towing and not towing. What I found is setting the coils at 15 psi was all I needed for both towing and daily driving. So long story short, save some money and don’t buy the onboard compressor. You can just set these air coils with a pump to your desired psi and leave it. In my case I have not had to add or lower psi in over a year. So the bags keep their pressure.
As far as install they’re pretty easy. There’s tens of [onine] videos that are very helpful. I did try the one method of smashing the bag and sliding through the coil and found it to be too difficult. I ended up dropping the axle and pulling the coils. It also made things easier when cutting the bump stops. I ran in my hoses from the top of the axle down. I felt it created less pinch points and was easier to route.
Great kit overall. Do heed the install instructions, and not online forums for the 5th gen 4Runner. The instructions are correct, and forums are not.
Only think I did not like about the kit are the barbed fittings, and the flimsy plastic tee that’s included. The barbed fitting are extremely difficult to have the air line engaged into in a confined space under the vehicle. A push to connect fitting, or some other type of compression fitting would have been easier. 1088940
Works great helping level the 4Runner out while pulling our boat. Install was also easy. 3565231
by:
James
02/08/2022
2010
Ford
Mustang
I have these on a 2010 Lexus GX460 and have towed a uhaul car trailer with our 2005 convertible Mustang GT across the country, which was a bit heavier than our regular tow, a 2007 Yamaha AR230 jet boat. The airbags make a huge difference and I could not be happier with em. 1260572
James
2/9/2023
One year along, and they’re still working like a champ!
by:
NC
11/30/2025
crap. a waste of money. I've now fixed 3 separate leaks. 3455971
by:
David
08/17/2021
I have both the Air lift and Timbren Kits on my Gx460. I tow at the maximum rating for the vehicle and with both I can customize the amount of support for the load at the time. The Timbren at max tongue weight does not cushion enough on its own (i use these for lighter loads) but fill the Air lift when at full capacity. Both systems have their use and application. The combination has however offered a relatively inexpensive but significant upgrade to the stability and ride quality of the Lexus loaded and unloaded. I prefer a slightly more stiff and stable platform and I can now customize to my needs. I am happy with my purchase. 1124993
by:
Rick
05/31/2021
2016
Toyota
4Runner
Very pleased with this upgrade to out 2016 4Runner . Airlift bags were a breeze to install and work great to omit rear sag ! RBuchanan Maricopa , Arizona 1052191
by:
Mark
05/24/2023
This is a great product for my needs. Able to pull bigger trailers with my GX460 without significant sag. No problems with loosing air after one year. 1585722
by:
Kenneth
04/14/2025
easy install. i'm very happy with it.3300015
by:
Scott
01/23/2022
2011
Lexus
GX 460
Straightforward install. Seems to be working for my GX460 and trailing my travel trailer. 1250932
by:
Toan
06/30/2023
Price wasn’t bad, delivered quicker than expected. Super easy to install. Works great , my truck no longer sag when pulling my trailer1612744
by:
Eric
04/01/2025
Its what. I intended to buy3289557
by:
Chase
12/14/2022
2018
Toyota
4Runner
Easy install, works great1484502
by:
Ryan
10/06/2023
Works great!!1678342
by:
Matt
06/30/2023
I ordered in the evening and the item was in the mail the next day. Easy peasy! 1612972
Hey Bob,
Since your 2019 Lexus GX 460 is lifted in the back some, the Air Lift 1000 Air Helper Springs # AL94VJ aren't able to reach properly which is why you're not getting the effect you're wanting.
You can add multiple of the 1" Spacer # TA25723-90AD00 to the Timbren Rear Suspension Enhancement System # TTORSEQ so it sits where it needs to instead of there being a big gap. The SumoSprings don't have a spacer kit so you'll want the Timbren kit for your instance. view full answer...
No, you do not if you have the stock coil springs. The Air Lift 1000 Air Helper Springs for Coil Springs item # AL94VJ will fit right inside the coil springs on your 2018 Toyota 4Runner. view full answer...
Hey Mark, thanks for reaching out. I double checked with Air Lift and unfortunately, they do not offer a helper spring kit for the 2021 Lexus GX. They have a kit for the 2010-2019 GX 460, but that kit will not carry over to the later model years.
If you need to beef up the rear suspension, we do have products for that. What I recommend is the following:
- SumoSprings Solo Custom Helper Springs - Rear Axle # SS68DR
These are rubber helper springs, and they have a capacity of 1,400 lbs.... view full answer...
The AirLift # AL94VJ will do a good job of helping fight sag on your 2021 Toyota 4Runner and they do come with inflation valves to allow you to inflate the airbags from your existing air compressor or a bike pump with a Schraeder valve fitting. You can deflate them when not in use or keep them filled to 35psi at all times to give yourself some extra stiffness in your rear suspension.
You'll typically install the air lines and valves in an easy to reach spot on the vehicle, either in the... view full answer...
The Air Lift 1000 Air Helper Springs for Coil Springs part # AL94VJ are a fit for a 2011 Toyota 4Runner with stock coil springs. If the lift utilizes the stock coil springs then there should not be an issue. If the lift uses aftermarket coil springs the only real option would be the Timbren Rear Suspension Enhancement System part # TTORSEQ with spacers, the Timbren Spacer part # A25723-90AH00. view full answer...
I recommend using the SumoSprings Solo Custom Helper Springs # SS68DR on your 2022 Toyota 4-Runner with the Tuson Asymmetric Sway Control # 335TSC-1000 on your TAXA Mantis Overlanding trailer. There currently is no way of using a weight distribution hitch with the Lock N Roll hitch you have.
The SumoSprings # SS68DR are rated for a capacity up to 1,400lbs and will not require you to constantly monitor the air pressure needed for the Air Lift 1000 Air Helper Springs for Coil Springs #... view full answer...
If the lift utilizes the stock coil springs the Air Lift 1000 Air Helper Springs for Coil Springs # AL94VJ will work just fine. If they don't use the stock coil springs, then you are going to need to use the Timbren Rear Suspension Enhancement System # TTORSEQ with the spacer # A25723-90AH00. view full answer...
All of our suspension enhancement for your 2016 Toyota 4Runner are designed to be used with the factory suspension. You may still be able to add the Air Lift 1000 Air Helper Springs for Coil Springs # AL94VJ if your Bilstein coil springs are the same inner diameter as the factory springs. This would allow you to add stability and reduce suspension sag when towing with your 4Runner. view full answer...
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James
2/9/2023
One year along, and they’re still working like a champ!