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. Great Prices for the best vehicle suspension from Firestone. Firestone Coil-Rite Air Helper Springs - Rear Axle part number F29ZR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Firestone Vehicle Suspension
- F29ZR
Highlights
Custom Fit for Your Vehicle: Mounts to existing attachment points
Up to 1,000-lb Load Leveling: Keeps the vehicle level when hauling heavy loads for steadier control.
Improves Steering and Braking: Prevents rear sag so steering, braking, and traction stay consistent.
Balances Uneven Loads: Adjusts 5–60 psi side to side to level off-center cargo or trailers.
Smoother Ride Under Load: Absorbs road shock and helps prevent bottoming out on rough roads.
Durable Polyurethane Design: Elastic construction maintains stability and comfort over years of use.
Features to know about
Stay Level and Confident Under Load: Up to 1,000 lbs of Rear Suspension Support
Heavy loads can make your rear end sag, raising the front and throwing off your steering and braking. Firestone Coil-Rite Air Helper Springs add up to 1,000 lbs of load-leveling capacity to keep your vehicle steady and balanced. Fitting inside your existing coil springs, they help maintain level ride height, reduce tire wear, and keep handling predictable when towing or hauling. With added cushion from the air springs, braking stays firm and steering stays controlled even under load.
Fine-Tune Ride Comfort: Adjustable Air Pressure from 5 psi to 60 psi
Every haul is different, and these springs let you dial in the support you need. With manual inflation valves for each side, air pressure can be adjusted from 5 psi to 60 psi to match your current load or road conditions. Add more air for heavy loads to level out the rear or lower it when empty for a softer, smoother ride. You can even balance off-center loads by adjusting each side separately for better stability and control.
Smooth Out the Rough Stuff: Cushioning That Prevents Bottoming Out
When rough roads or heavy cargo push your suspension to its limits, the polyurethane air springs take up the hit before it reaches the frame. They absorb shock between axle and chassis to cut down on harsh bumps and prevent bottoming out. The result is a smoother ride that keeps your truck from bouncing and swaying over uneven or adverse road conditions.
Built Tough for Years of Use: Durable Polyurethane Construction
These Coil-Rite springs are made from elastic polyurethane built to handle repeated compression without losing shape or performance. They deliver long-term stability and comfort without cracking or leaking under normal use. Each kit includes brackets, air line, hardware, and separate valves for manual inflation—everything needed to get it installed and working right away.
Specs
Weight and Capacity
Load-leveling capacity: at least 500 lbs (at most 1,000 lbs)
Air Pressure
Adjustable air pressure: 5 psi to 60 psi
Warranty
Air springs: Limited lifetime warranty
Hardware: 2-Year limited warranty
Note
Construction material notice: The construction material of the fittings may vary.
WARNING: This product and/or related accessories can expose you to chemicals including lead and/or lead components, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Customers Who Purchased This Vehicle Suspension Also Bought...
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!!! 3363598
Really cool to hear how well the airbags have been working out for you, especially hearing your experience in the past. How's the ride day-to-day when you're not hauling that awesome camper?
Stanley
7/4/2026
Other than a slight leak in the driver’s side that is not any fault of the product, this set up has worked extremely well! I’m very happy with these air bags and would highly recommend them over the AirLift1000 bags as there’s no comparison in quality! These Ride Rite bags are worth every penny!!!
by:
Jeffery
07/16/2025
These bags along with minor adjustments to my load leveling hitch made towing my 19.4 No Bo trailer so much more relaxing!I am running 20 PSI and 3/4 of an inch higher than stock ride hight. Easy peasy 3372411
That's an awesome shot, Jefferey! Where were you camping at?
by:
Daeton
04/14/2025
2022
Jeep
Gladiator
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. 3299889
Thanks for posting the photos and for sharing what all you had to do to get them to work! It's what makes your review especially valuable to other readers. Thanks, Daeton
by:
Curtis
11/26/2023
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. 1696148
Still working great even with the twists, I haven’t had any leaks. I did pick up some quick fittings if I did need to repair. I’m really surprised with hot summers and cold frozen winter weather use with no need for repairs.
by:
Xong
02/28/2024
2021
Jeep
Gladiator
The Firestone airbags are very well made and has quality feel. It was not very warm in MN when I installed them so I needed to use lubrication and a heat gun to warm the airbags from a distance so the airbags would be pliable. My gladiator has a Decked drawer system and rear steel bumper installed which caused the rear to squat more than the front. After installing these airbags and learning that I was fluent in “FRENCH” the rear of the truck was raised and squatting issues addressed. The drive was improved as well, less body roll around curves. 1739895
Ah, such a helpful language that "FRENCH" is. I use it quite often with installations.
by:
Buffalo
11/15/2025
The product performs excellently. I know this because i had a set of Firestone airbags on my 2020 Jeep Gladiator. Installation is another story all together. The directions included in the box are pathetic. They fail to describe the wrestling match involved in stuffing the bag into the interior of the coil spring. I resorted to jacking up the rear of the 2021 Jeep Gladiator to elongate the spring thus providing more space between the coils to push the deflated airbag material. Once the bag is inside you then must remove the valve stem and install the fitting and the air line. It is possible to achieve installation but I warn you the Job is not for weaklings. I recommend hiring a professional technician for installation. After installing the airbags i logged into the etrailer site and watched Daniel on the video provided. One thing that he did that I did not do, he inserted the bag in so that the bottom went into place first then he worked the top half into place. However he did not show his full wrestling match! I rate the install as VERY difficult. 3449791
by:
Ashley
04/09/2020
Super easy one person install on 2020 Jeep Gladiator. tip: drop the shocks at the lower mounting point and drop the sway bar links where they attach to the frame, springs slide right out making this MUCH easier. Great service and fast shipping keep us coming back to etrailer again and again, All it takes is 30-40 lbs of air via a single valve stem thanks to purchasing the T fitting. We are ready to crawl! Trailer pictured is 4000lbs + loaded. Sitting very well thanks to this Firestone bag kit! Thanks again etrailer! 776655
Poorly designed for installation. If you want to fight for a few hours getting them in, be my guest. I like to buy parts that fit, not have to struggle with them. Notice during the install video at ET, they cut .. and miraculously the bags are in when they re-convene. I suspect they cut the video for some cussing time. And I really don't like spending an hour trying to thread a valve onto a bag, up inside of a coil spring that I cannot see. They do come with push-in fittings to make the other connections solid, but I would never purchase these again. Never. 3413201
by:
Brent
07/10/2025
The air springs have worked great. Really helped in being able to pull my Jumping Jack trailer safely. Great product!! 3367576
by:
Joel
11/25/2025
2025
Jeep
Gladiator
Seems to work well. Was a bit challenging to install, watch as many videos as possible. Got them in and 30 lbs. air, back-end sag is gone. 3454122
by:
James
04/30/2026
Still working3535798
by:
Ron
06/01/2022
Great product and works perfect on my Jeep Gladiator. The instaletion video was nice to watch although is very much the harder way to install the air bags. Much easier to remove the outer sway bar bolts and the shoch bolts, raise the frame and drop the bag down through the top of the removed spring. Just be sure to align the factory top spring pad correctly when raising the axle back in place. This also made it a lot easier to install the air line. It took me about one hour this way for the complete job and never folded the bag to force it through the spring. 1307329
Ron
6/20/2023
I have been towing my trailer to some fun locations on some not so friendly roads. The air bags are working perfectly. I bring an air compressor with me so I can deflate to low pressure when not towing and fill the airbags up when needed.
by:
Robert
07/23/2025
Price was very good and shipping was unbelievably fast .it arrived so fast I didn't need too track it .excellent service. 3376534
by:
Charles
02/23/2025
2023
Jeep
Gladiator
the air bags are well built,and will last a lot of years,to install i removed both springs on my jeep gladiator,fixed sag when pulling 4000lb boat3269475
by:
V
09/18/2024
So I will start with the good, good quality and well built. The bad was the install, in the video they claim you can deflate and slide thru coil springs, maybe if you have a lift and can walk under this is possible. If you are doing these in your garage with vehicle on jacks, forget about it!!! Ended up dropping the springs out and inserting bags, that was the ONLY way I can get them to fit. Does what they are designed for and feels like they will last. 3210250
by:
Adam
11/04/2025
Works great!3442583
by:
Lance
02/17/2023
2020
Jeep
Gladiator
They want a review 12 hours after delivery :-( On a 40 degree day I had to drop the shocks and swapbar connections and then jack down the axle housing and remove the springs and drop the bags in from the top. The bags are just to solid, even after warming them up inside the house, to go thru the side of the spring. It doesn't take all that much longer to remove the springs. You just have to be aware of more ways that hoses, cables, and such could be hurt. The ride is stiffer, even at 5# of air. Measuring rearend sag they should be able to deal with the load my trailer tongue when aired up to 60# I would have waited and done a better review but they couldn't wait to bug me for comments 1520373
by:
Derek
07/07/2022
Great quality product. These will help sag when towing a trailer. They will also increase the ride harshness slightly. 1321457
by:
Ed
07/31/2024
Great product! Installation was a bit tricky. Using spry on soapy water helps. The bags have been very durable and very reliable holding air at 35psi. I have them installed on my Jeep Gladiatorfor a year and no issues to report. No sagging when towing my 20’ camper trailer. I am very pleased with this product. 3185565
by:
Bryan
09/01/2022
2021
Jeep
Gladiator
Fantastic product! Raised my Gladiator almost 2" in the rear. Purchased these bags because of the drawer system, bed rack, and RTT in the bed caused the rear of the Gladdy to be 1.25" lower than the front. Now the Gladdy sits like a "normal" truck with the rear slightly higher than the front. Ride is noticeably better! Painful to install but worth it! 1387073
by:
Rick
07/12/2023
2021
Jeep
Gladiator
Much improvement for towing and hauling heavy loads in the bed. 2021 Jeep Gladiator and NuCamp T@B 400 Boondock teardrop trailer. 1621951
by:
Jh
08/16/2022
Doesn’t quite lift up as I expected it to but does make the springs stiffer 1360524
by:
Fred
02/07/2021
The kit was exactly as described. But the bags were very hard to slide in it was way easier to remove than sping and slide the bag in from the top 953338
by:
Raymond
03/01/2024
2023
Jeep
Gladiator
Good product, good price, good service1741025
Raymond
3/2/2025
Unfortunately, there must have been a small leak in the line, and they deflated, and then they twisted inside the springs kinking the lines. Is there any way to prevent the bags from twisting?
Robin H.
3/2/2025
@Raymond to prevent that make sure you check the air pressure periodically so they stay properly inflated. If you think you have a leak you can use some soapy water to locate and repair.
by:
Dennis
03/21/2022
Great quality product, although for install I had to pull the springs on my diesel gladiator to get the airbags installed. 1275180
Hey Bob, you are definitely thinking in the right direction adding rear support with that much constant weight back there. Between the 320 lbs you’re carrying full time, another 200 lbs with the kayaks, and up to 500 lbs of tongue weight, you’re asking a lot from the rear coils.
Between the Firestone 4184 bags and the SumoSpring bump stops, I would lean toward a full air bag setup like the Air Lift LoadLifter kit with spring cradles, part # AL88FF. The big advantage is adjustability. You... view full answer...
Yes we've installed air bags on a 2020 Jeep Gladiator like yours, but your Jeep does not have normal style air bags available, only the ones that go inside of the coil spring, the Firestone # F29ZR.
These will give you between 500 and 1000lbs of load leveling support, so they will help the sag you're getting towing your 21' bass boat.
I can't say I've seen someone wire an onboard air compressor to these bags. You could install the # AL25856, but I'd personally just use a battery power... view full answer...
Hey Dane!
I went down to our warehouse to measure the airbags from Air Lift 1000 Heavy Duty Air Helper Springs for Coil Springs # AL60828HD and they came out to 12" tall (12-1/2" including Schrader valve) and 5" wide while uninflated. The manufacturer's specifications on the airbag are 12"x5.75"x8.75", so those measurements are likely going to be when the bag is inflated. This bag and kit is made for Ram 1500s starting in 2019.
If you're looking for a bag that will fit your 2021 Jeep... view full answer...
The Firestone Coil-Rite Air Helper Springs # F29ZR can be used on your 2021 Jeep Gladiator as long as you are still using the factory springs with your 3-1/2" lift. If your lift replaced the factory springs I will need you to take a few measurements to confirm if the helper springs will still fit. I need to know the inside diameter of the coils, height inside the coils and the distance between each coil.
The Air Command Compressor System # F2610 will allow you to control the air pressure... view full answer...
Hi Jonathan; that doesn't sound right, do you have a picture you can send? I'm sorry to say that Air Lift does not make a heavier air bag for your 2020 Jeep Gladiator. The # AL60830 is the only option. If you really want to stick with air bags you could try the Firestone # F29ZR.
Have you considered SumoSprings Solo Custom Helper Springs # SS42XR? These have a very simple, straightforward installation. They also don't require any maintenance once installed. With a capacity of 1,400 lbs... view full answer...
There is an air bag kit for your 2020 Jeep Gladiator from Firestone with their Coil-Rite kit # F29ZR.
This kit fits both the 2WD and 4WD versions of your vehicle and it installs inside the coil springs so it's a little different than your standard air bag kit but it's still effective. I've attached an installation video as well as a photo of this kit on a 2020 Gladiator for you to reference.
I like to recommend an air compressor with any air bag kit because it allows you to monitor and... view full answer...
With the McHitch on your Obi Dweller 13 I have a couple recommendations since you will not be able to use a traditional weight distribution hitch. The McHitch changes the pivot point from the ball to the u-joint so it will not work properly with any current weight distribution hitch. Instead you can mount Firestone Coil-Rite Air Helper Springs # F29ZR on your 2022 Jeep Gladiator. This will allow you to take much of the rear end sag out of your rear suspension. You can use the Air Command... view full answer...
I would go with the SumoSprings kit part # SS42XR for your 2021 Jeep Gladiator Mojave for suspension support. Air bags can work great but they are a lot more maintenance and the support they provide is very easily pretty harsh. The SumoSprings kit is something that once you install it you don't have to think about it again and it will provide the support you are looking for for all of your trailers. view full answer...
The Firestone Coil-Rite Air Helper Springs part # F29ZR are a fit for a 2021 Jeep Gladiator. They install inside the airbags and then expand when pressure is added. Therefore, the dimensions change when pressure is added so I'm not sure measuring would be helpful. If you have stock coil springs they are a confirmed fit.
That said, the spring is roughly 11" tall x 5" diameter. view full answer...
I checked with the manufacturers rep about use on your 3.5" lifted 2021 Jeep Gladiator. If your lift was completed without changing the dimensions of the OEM coil spring components then the Firestone Coil-Rite Rear Air Helper Springs, # F29ZR will fit. If your 3.5" lift project entailed change of these components then the Firestone Coil-Rite Rear Air Helper Springs, # F29ZR will not work.
Per Firestones literature "Lift spacers can be used with most Ride-Rite™ air spring kits, but not... view full answer...
It appears you are going to need to consider the SumoSprings # CSS-1195R for your 2020 Jeep Gladiator Rubicon. When I reached out to Firestone to verify if their Coil-Rite Air Helper Springs # F29ZR would work with the lift coils you have they said they would not fit properly.
To verify the SumoSprings # CSS-1195R I will need for you to measure the diameter of the spring coils and the height between the coils at unloaded ride height. view full answer...
As long as your 2021 Jeep Gladiator Mojave still has the OEM coil springs the Firestone Coil-Rite Air Helper Springs - Rear Axle # F29ZR you were looking at will fit perfectly.
The # F29ZR offer a 500-1000lb load leveling capacity to support your rear suspension when you are towing or have a heavy payload in the bed.
To keep from having to manually inflate the helper springs I recommend adding the Firestone Air Command I - Analog Gauge w/ Light-Duty Compressor - Single Function - 130... view full answer...
I have a solution for you, but the Firestone # F29ZR are not a fit on the 2020 Jeep JLU. Instead, I recommend using the Air Lift 1000 Air Helper Springs for Coil Springs - Rear # AL60829, which are a similar style air bag for your coil springs that will do a great job at helping stiffen up the back end when towing.
I've linked a short review video of these for you to have a look at, as well. view full answer...
I'd probably set aside a couple hours to install the Firestone Coil-Rite Air Helper Springs # F29ZR as it's a pretty simple install overall. I attached an install video for this for you to check out as well. view full answer...
Hey Stanley, so I'd agree that the Firestone Coil-Rite Air Helper Springs # F29ZR would be better suited for what you want to do with your Jeep.
These springs fit inside your existing coil spring suspension on your vehicle, provide extra support for your existing rear coil springs, is made in the USA, and has a max load leveling capacity of 1,000 lbs.
These can not be used with a spacer kit # F2366, but if your lift does not change the dimensions of the OEM coil spring, then the Firestone... view full answer...
You would leave the cap off of the air bag of the part # F29ZR once the bag is in place. This allows the fitting on the end of the air line to control how much air is in the bags. view full answer...
As long as the lift that was installed on your 2022 Jeep Gladiator didn't change the coil spring dimensions of the vehicle the Firestone Air Bag Kit part # F29ZR would fit without any issues. view full answer...
Yes we have the Firestone Coil Rite kit part # F29ZR that fits your 2023 Jeep Gladiator. This will give you additional rear suspension support that would prevent suspension sag when towing or have a heavier hitch accessory. view full answer...
You could indeed use the # F29ZR if you have a body lift as the suspension geometry and height wouldn't have changed.
If you have a suspension lift, in order to recommend the correct solution, I'd need to know the inside diameter of the coil springs and the inside height measured from stop to stop. If you can reply with that information, I'd be happy look for a solution. I've linked to an installation video for the # F29ZR Coil Rite System. view full answer...
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Gwendolyn Y.
7/10/2025
Really cool to hear how well the airbags have been working out for you, especially hearing your experience in the past. How's the ride day-to-day when you're not hauling that awesome camper?