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For safety and stability, air springs are the perfect partner for your rear suspension when you are hauling heavy loads. Springs fit inside existing coil springs to help level your vehicle, improve braking and handling, and reduce tire wear.
Features:
Specs:
Note: The construction material of the fittings may vary.
Firestone Coil-Rite springs fit inside your existing rear coil springs to maximize the effectiveness of your suspension system. The added cushion provided by the air springs allows your vehicle to better handle a heavy load or trailer. Hauling heavy loads or towing a heavy trailer can make the rear of your vehicle sag and the front end rise. This puts more strain on your rear axle and reduces contact between your front tires and the road, causing problems with braking, steering control and traction. By adding air springs to your rear suspension, you can help to level your vehicle for more effective braking and handling under heavy loading or when you encounter adverse road conditions. The air springs also help to level your headlight beams and reduce wear on your tires.
Adjustable Air Pressure
The air pressure in your Coil-Rite springs can be adjusted manually, side to side, to compensate for off-center loads. A centered load improves the stability of your vehicle by reducing body roll. The air springs will also help to absorb road shock and soften contact between your axle and frame. This prevents bottoming out, thus improving ride comfort. Route the air line tubing for the springs to your vehicle's bumper to provide easy access to the manual inflation valves.
Air Spring Construction
Coil-Rite springs are constructed of durable, elastic polyurethane to ensure years of service. Single replacement springs (sold separately) are available for maintenance to an existing Coil-Rite kit.
Air Spring Installation
The Coil-Rite springs install inside your existing coil springs. The custom-fit springs attach to your vehicle's spring seats.
Average Customer Rating: 4.4 out of 5 stars (666 Customer Reviews)
For safety and stability, air springs are the perfect partner for your rear suspension when you are hauling heavy loads. Springs fit inside existing coil springs to help level your vehicle, improve braking and handling, and reduce tire wear.
5 for the product, 1 for Etrailer and Firestone's service. As far as I know, this product continues to be packed with the instruction manual from a different model, which overstates the maximum PSI for this model by something like 50psi. The first one I purchased (that was filled below the max PSI that the instruction manual incorrectly stated) exploded while I was towing. It was terrifying. Both Etrailed and Firestone blew me off, refused to help, and said they could do nothing about the wrong manual being shipped with this product. Around a year later an Etrailer rep sent a satisfaction survey and eventually refunded me, but it was incredibly frustrating.
The airbags themselves work as intended and I bought a second pair now that I know to ignore the manual.
Installed on a 2016 4Runner in conjunction with a 1-1/2" Daystar coil spring spacer. Since the coil spacer is hollow, I left one segment of the factory bump stop in place to compensate for and match the height of the spacer. I also added a Firestone T-fitting on the airline for a single inflation point and located the inflation valve next to my trailer plug wiring. Quite a pain to wrestle the coil back in place with the added height of the spacer, but that is no fault of the airbags; pry bar proved critical to wedge the coil back in place since I did not try the bottle jack between the frame and axle trick. After nearly a year, no leaks, bags hold air well. I put 25 psi in them for towing our travel trailer, or keep them at 10 psi for normal running around. I have also found them useful to prevent or at least reduce bottoming out the soft rear suspension that happens when off road driving with even just a couple hundred pounds in the back. Even at 25 psi they ride great and you wouldn't know they are back there at 10 psi. Highly recommend for the low cost and added versatility!
Off2mtns
12/14/2018
Still working great after a year. Knock on wood... no leaks to date. I would consider these essential equipment for towing, and would highly recommend for heavily loaded backcountry travels as well. I did try them near their max pressure on one trip with 5 people, roof top tent, and gear for a week of camping this summer and it was too much and felt very unsafe ped the pressure back to sub-30 psi after driving a few blocks and all was great after that!
Install was easy on 2014 FJ Cruiser...pulled the wheels off, jacked it up a bit, and the axle dropped enough to allow room to fit the bags inside the springs. I will see how they perform when I hook up my trailer but they inflate quickly and I can see these will stop my vehicle from squatting when the cargo area and trailer are heavily loaded. Another excellent product offered by etrailer...thanks.
Ryan G.
5/23/2018
After a year of regular use, these bags have been great. They keep my FJ level when towing and as a result steering while towing is vastly better.
Wow what a difference. No more problems bottoming out on rough roads. The installation was a little tough but I can't say enough about the end result. Now I Can pull just about any trailer with the 4runner.
Best $xx.xx I’ve yet spent on trailer towing. They are so great for leveling off vehicle when towing. And they adjust easily for different trailers/tongue weights. Make a “load” of difference and way cheaper / easier than a weight distribution hitch. I installed these myself on a 4Runner, in my garage with two jack stands and a floor jack. Video was great and everything went just as shown in the video. Only difference was that my vehicle has KDSS suspension. Need to tie kdss rod cylinders with zip ties to hold same length when bottom bolts disconnected. Keeps it from needing rebalancing.
Good option have put on other vehicles in past for hauling trailer. Reduces sag/bounce with boat/RV but can let air down when not towing for better ride.
These never worked. There is a defect in the quick connect fittings. When I contacted etrailer they told me to contact Firestone for warranty replacement. Firestone did eventually send me one replacement bag. When I went to have it installed they discovered the second bag also had a quick connect fitting leak. I gave up on the entire hassle of these air bags.
Katrina D.
9/14/2023
It sounds to me like a warranty issue. For Firestone, they prefer to handle all of their own warranties. I will send you their contact information via email.
Just installed the Firestone air bag system in my 2017 4Runner. After installing a 250lb aftermarket bumper the sag to the springs was just too much, I also tow a watercraft trailer so that would squash the springs even more, the simple solution is the Firestone air bag system. Install was easy. With my spare permamently out of the undercarriage I just used two existing holes to mount the valves. I think for what you get the price is a bit much, but you can look at it like the air bags will provide a service for hopefully years to come, so that is worth the price.
Right bag developed a leak after 2 months despite keeping it partially inflated. Will need to order another bag and replace. Durability is questionable on this product.
Katrina D.
7/12/2024
Oh that is not good. Do you have some pictures so we can get a replacement processed for you?
First try at installation did not go well. Put everything up and tried again next day after watching a few online videos. Much better success. Main thing was the instructions did not mention taking the rear wheels off. Once I did that, everything went more smoothly.
My package arrived in the time frame I was told. In perfect condition. Great team work. Second time I've ordered and an ill buy again.
It works better than I expected.
Works well. Does not leak once installed. Correctly. Is a bit tricky to get hoses cut exactly at 90 degrees (to avoid leaks). On 5th gen 4runner you can just jack up car and install air bags upside down (nipple down). No need to undo axle/shock.
Wraymond P.
8/31/2018
Still working a year later.
Just got them put on. The instructions in the box were for the wrong vehicle and called for more parts but I looked up a video and turns out etrailer has a really good video that was better than the instructions and showed that the correct parts were in the box.
I use them on 5th gen Toyota 4Runner while towing my 19 ft trailer. I inflate them to 30 pounds and my truck is almost perfectly horizontal. No need for the weight distribution hitch which by the way is not recommended on my truck.
The air bags do a great job of helping to level out the load. The ride seems better as well. Air bags Are not a replacement for a load leveling hitch and should not be treated as such. They can and do complement a load leveling hitch though.
I purchased this product to prevent rear suspension sag in my '99 4Runner while loaded with camping gear and towing a small boat. It's surprisingly easy to install, and it works very well! I'm very pleased with the purchase. And, as always, the customer service at etrailer was second to none! Shipping was fast, pricing was competitive, and the product was exactly as advertised. Thanks to the folks at etrailer!
Easy to install and works as advertised. Keeps the truck level when pulling a trailer with just 10 psi in the device.
Andrew
3/6/2020
Still works well, no issues. Its been a good investment .
Helps keep our 2016 4Runner level when towing our 3,500 lb travel trailer. Easy to install, very reliable, fill with air using a bike pump. Super simple! Highly recommend.
etrailer’s website is one of the easiest and best websites to navigate and place an order! They have lots of pictures and how to videos on almost every product I looked at which is super helpful. Their order process was simple. Their order shipping details was very well put together and made it super simple to track my order.
I am extremely impressed with their customer service! We will order everything we may need from this website from here on out!
Super easy install didn't even have to take anything apart, just squeeze the bags between the springs. Thank you so much to e-trailer! You guys had this on the shelf and shipped out right away got here early thank you! My only complaint is that your overpriced, but you had it on the shelf so I guess I shouldn't complain. I'm giving you 5 Stars because you are one of few vendors I have dealt with that I had 0 problems with. Worth the expense.
Great product, great service from the e-trailer team.
Etrailer is our go to for all our trailer accessories. Parts are always delivered on time and they provide quality parts at a great price.
Not too hard to install between the springs with the rear-end lifted. Currently one side can’t hold more than 35psi probably because of tubing not fully inserted in bag. Will have to lift rear-rear end to investigate...
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Heather A.
9/30/2024
Hey Jesse, I took a look at the manual and it looks like it's correct now. I am sorry that happened. The PSI now shows maximum of 35 lbs, does that sound right?