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When the back end starts to sag under a heavy load, these Coil-Rite air springs step in to help. They fit inside your existing rear coil springs to keep your vehicle level and balanced. With a load-leveling capacity of at least 500 lbs (at most 1,000 lbs), they improve braking and steering control under weight so you stay confident on the road. Keeping your ride level also helps maintain even tire wear and proper headlight aim for safer driving.
Every load sits a little different, and that’s where the adjustable air pressure makes a real difference. Each side can be aired up individually through manual inflation valves to level uneven loads and reduce body roll. Set the pressure higher when carrying tools or gear, or lower it when driving unloaded for a softer ride. The air springs also soak up bumps and road shock, helping prevent bottoming out on rough roads.
Each spring is made from durable, elastic polyurethane that stands up to heavy loading and harsh conditions. The material keeps its shape and flexibility through years of use while continuing to provide support and stability. Replacement springs are available separately if you ever need to refresh an existing setup.
These air springs install inside your existing coil springs using the included brackets, hardware, air line, and separate manual valves. You can route the air lines to the rear bumper for easy access when inflating or deflating. No special tools beyond basic hand tools are needed, making this a straightforward weekend project for anyone comfortable working on their own suspension.
The construction material of the fittings may vary.
Ratings & Reviews
THE SERVICE IS AMAZING IHAD A SMALL ISSUE AND IT WAS HANGELED BY PAULA IMEDIATELY THANK YOU THE PRODUCT IS INSTALLED ON A 2014 VW BEETLE THERE IS A HOLE IN THE BOTTOM OF THE SPRING HOLDER SO I INSTALLED THE AIR SPRING WITH THE LINE AT THE BOTT0M AND THREADED THE LINE STRAIGHT OUT THE HOLE PRETTY SMOOTH THANKS AGAIN
I've yet to install these, I will update once complete. But I've heard from numerous people that if you life the van at the jackpot and let the weight of the tire extend the spring, you can remove the stopper with channel locks and slide the bag in using a liberal amount of soap, so you don't need to disassemble the axle. Again, I will update when completed.
my air bags for my 23 ram were easy to install, the service was excellent. I will be telling every body I know about how friendly and easy it was to order from you.
Worked well. Second time I’ve installed them on a 4Runner. The result was a needed improvement in sway, dive and sag. It also helps the steering wander.
Great upgrade for carrying weight in the back or towing a trailer. They are a bit tough to install. I found twisting the bag over in the middle and inserting it between the spring to the trick. Insert the top side on the passenger bag first. Insert the bottom side first on the driver side take care with the week ass tubing because if it folds over on itself in a coil, it will remain pinched which I can see will cause problems in the future. The tubing was better 20 years ago than what they give you today. One tube replacement over $30!! Ridiculous !! I like the right height adjustability and my truck feels more stable with a load of weight in the back of my truck advertised in the video shown below.
Fit my 2001 Expedition perfectly. Took away all the sag when towing and like others have said I like the way it rides better even unloaded with 5PSI in the bags. Well worth the money, easy install. FYI this was my first time using bags on any vehicle, I was nervous and these were fabtastic!
Firestone airbags have worked well for my 2017 4Runner. When I'm not attached to my camper, I keep the airbags deflated to about 5 PSI. But when I put my trailer 3,500 lb. Onto the back of my 4Runner I get several in of sag. I pump up the airbags to about 20 psi and I level out the whole rig. What a perfect hybrid system to have. It's there when you need it. Perfect system for a sagging. Backside on a rear coil spring 4Runner. Thanks, e-trailer
These were just as described as far as quality and look. The installation of them were a little more difficult than they show in the video but can easily be done by someone with basic skills. I would recommend if you have the ability to remove the springs and then just insert the bags that way as I couldn’t get one in without doing that. Otherwise the install is pretty straightforward. Haven’t used them with a load or towing yet but hopefully they will work as designed.
Parts are very good quality but installation instructions for my 14 Jetta were very poor. Had to air to 25 psi to keep air bag from shifting in spring but did help stabilize vehicle.
It fit great. And works like a champ... I couldn't be happier with these air helper springs! E trailer made it easy and they followed up with me to make sure i'm pleased with the product... Very happy with the service.
Great product. I must say that they were a little tough to install. A very tight fit. Fortunately for me I had the availability of a vacuum pump. With that I was able to evacuate all the air out of the bags which made them flatter, with that, it made it easier to slide them between the coil springs. I tow a small camper trailer, I usually run around 20 psi in the bags. This keeps my vehicle level and adds for a smooth ride. A great product.
I installed these in my buddies 2024 Toyota Sienna Hybrid FWD. I installed with valves up and it took about 4 hours. I had to remove the springs to remove the stock upper bumpers. He's in a wheel chair and has a lift on the back. Going to test it out this week.
The airbags were difficult to install on a 2021 Sienna. It required removing the rubber stopper from inside the coil spring. Once that was out, install was easy. However, these need to be installed with the valve down as the plastic spacers fall out when the van is lifted for service when installed right side up as recommended. Upside down the air hose is routed thru the center of the plastic donut spacer which holds it in place when the van is lifted. However, once installed "upside down" the valves tend to pinch on the suspension as they move around. The pinching lets the air out and requires the bags to be frequently repositioned especially after the van is lifted for service. It is a good product, just unreliable and requires much inspection and maintenance to work properly. Will be loading up again for a summer trip and will need to reposition them so they work as I just had the oil changed.
I bought this set because I was having problems with one of the airbags I previously had gotten. It was on the right side of my forerunner. It had a slow leak. When I replaced the airbag this time it had a very fast leak. I finally found That if I used NAPA Sil-Glyde to insert tube it seems to be holding air. And I squeezed air bag into the spring. Use soap for sliding it in.
Phone service was excellent. Air bags helped a lot with stability. I found it easier to remove the spring from the Avalanche than to fight with it in chassis. Removing the spring also gave me a chance to clean the dirt and rocks out of the hose routing area. It was a little more work to drop the axle down but it really wasn't that bad. I was able to do it all without a hoist. Just used two floor jacks. I just let one side down at a time. Remove your swaybar link and shock and let one side down. Pull the spring and do the work in a vise. Its much easier than fighting with it on your back. Also put the air hose in really hot water and it will relax its memory.
Installer couldn't get them to hold air for more than a day.
And if pressure falls below 5 psi, there's a risk of damaging them.
Installation was difficult.
But they do fix the ride height issue when towing.
If I had it to do over, I'd get Sumo springs.
Great Idea - but they won’t hold air, which makes them useless! I knew they would be difficult to install, so I had an experienced auto mechanic who has installed these before to help me. They went in nicely, there were no leaks at the fittings-but they just refuse to hold air. Very disappointing.
I initially ordered the wrong airbags. I called eTrailer and Jeremy H. was very understanding. He got the right ones immediately shipped out and sent me a return label and info while I was on the phone with him. The bags seem good quality comparable to my previous Airlift bags. Instructions were well written and all hardware was accounted for in the shipment.
Well I did not expect to have a one year follow up from ETrailer! I’m a 5 Star happy with these airbags over the AirLift 1000’s I had that blew out just after the warranty was up! These bags are more than twice the product, as you can inflate to >60 psi and that makes for a way more steady ride with weight! I typically run mine at around 45 psi now, the AirLift are limited to 28 psi. The construction is far superior and quality is excellent!!!
Pretty easy install and product works great. Pulling our 22 ft crownline with our 2010 jeep grand Cherokee is much better all around.
A specialty tool I needed to put the air bags on my Grand Cherokee was a coil spring compressor. Straight forward install. Vehicle now rides much better when pulling a 4500lb trailer.
Instructions are weak. They do not explain how to get the "jounce" bumpers out of the coil springs. Secondly, I cannot locate the air leak, but figure it must be on top of one of the air bags and that the jounce mount might be hitting the elbow for the air line.
Not a very good design.
Picture of the spring helper. Air line really needs to be on the side if possible.
Thank you for checking in with me…unfortunately one of the airbags doesn’t seal properly and so I am running on one only… I have gone to the trouble of removing it twice boy I still can’t get the fill pipe to hold a seal….it’s the second set I have had…one of the first set leaked down and was crushed so I bought a new set. Can’t see buying another set and rolling the dice again.
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Michael B.
11/27/2013
My 2008 Grand Jeep Cherokee Overland has those yellow things jounce bumpers inside the coil also. Do those need to come out? Is it ok then that the bag doesnt fully occupy the space vertically?