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Firestone Coil-Rite Air Helper Springs - Rear Axle

Firestone Coil-Rite Air Helper Springs - Rear Axle

Item # F4130
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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. Lowest Prices for the best vehicle suspension from Firestone. Firestone Coil-Rite Air Helper Springs - Rear Axle part number F4130 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (356)
  • Q & A (7)
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Firestone Vehicle Suspension - F4130

  • Air Springs
  • Rear Axle Suspension Enhancement
  • Firestone
  • Light Duty

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:

  • Provides extra support for your existing rear coil springs
    • Springs fit inside existing coil spring suspension on your vehicle
  • Keeps your vehicle level when you are hauling heavy loads
    • Improves steering and balance
    • Levels headlight beams
    • Reduces tire wear
  • Maintains even load distribution with air pressure, leveling off-center loads
    • Air bags adjust manually, side to side, with individual inflation valves
  • Allows for more effective braking and handling
    • Works under heavy loading and adverse road conditions
  • Increases stability to create a smoother ride and prevent bottoming out
  • Constructed of durable, elastic polyurethane
  • Includes all materials necessary for no-drill installation
    • Brackets, air springs, hardware, air line, and separate valves for manual inflation
    • Switches and gauges, compressors, and air tanks (sold separately) are available for quicker and easier air spring inflation or deflation from inside your vehicle
  • Made in the USA


Specs:

  • Load-leveling capacity: at least 500 lbs (at most 1,000 lbs)
    • These springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufaturer's recommended weight limit.
  • Adjustable air pressure: 5 psi - 70 psi
  • Warranty:
    • Limited lifetime for air springs
    • 2-Year limited for hardware


Firestone Coil-Rite Air Spring Basics

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. 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.


Adjustable Air Pressure

Firestone Coil-Rite airline installation

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

Firestone Coil-Rite air spring components

Coil-Rite springs are constructed of durable, elastic polyurethane to ensure years of service.


Air Spring Installation

The Coil-Rite springs install inside your existing coil springs. The custom-fit springs attach to your vehicle's spring seats - no drilling required.



W237604130 Firestone Coil Rite Air Bags - Suspension Kit - Rear Axle

Firestone 4130

Installation Details F4130 Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Firestone Coil-Rite Air Helper Springs - Rear Axle - F4130

Average Customer Rating:  4.4 out of 5 stars   (356 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.

- F4130
by:

Installed on my 2020 Ram 1500 4x4 ecodiesel. Took about 1 hour. Jacked up rear of vehicle to let coil spread out a little. Bags went in easy. Air lines were simple to run. Bought the union T-valve so I could air the bags up at same time and to make sure equal PSI goes to each bag.



- F4130
by:

Overall great product it has performed exactly as I needed. However it is not an easy install at all. I am a very experienced mechanic and I ended up taking it to a garage that had a lift. They had to drop the rear axle down to get air bags in springs. That cost me another $200. The mechanics exact comment was " you would have never got these in without a lift". I would buy again but I would not attempt without a lift.



- F4130
by:



- F4130
by:



- F4170
by: 05/31/2021

Review from a similar Coil-Rite in Vehicle Suspension


Is a great idea but awful material !! I think that if the quality of material is higher, this would be worth it !! I ordered a kit and I have a professional Install it. within an hour the air was all out !!! I took back and Found that the connections were leaking . So we replace them and next day. no air (again) in the air suspensions . Found out that the air spring is defective. Is not easy to install and is harder to get it fix ,if leaks . I don’t recommend this product unless is a higher quality!! Other wise is a headache



- F4150
by:

Review from a similar Coil-Rite in Vehicle Suspension


These air bags are amazing! I have a 20' boat and hitch box I often use. The ride was horrible in my Armada when loaded down, but the air bags made a tremendous difference. The ride is smooth with no more bouncing around or bottoming out and the steering and handling are greatly improved. Installation was simple and took less than an hour for a guy who's not so mechanically inclined. When installing, use zip ties to keep bags compressed and then clip the zip ties once the bags are in the springs.



- F4135
by:

Review from a similar Coil-Rite in Vehicle Suspension


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.



- F4174
by:

Review from a similar Coil-Rite in Vehicle Suspension


They work great. First I added a levelling kit then the Firestone ride rite for when I tow my boat. Really notice the difference when towing. With fully loaded tongue weight, rear suspension dropped .75 inches, added 10psi to the bags and brought it back up .5 inches.



- F4135
by:

Review from a similar Coil-Rite in Vehicle Suspension


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.



- F4118
by:

Review from a similar Coil-Rite in Vehicle Suspension


Very simple design for preventing rear sag when weight is loaded on the tongue. Installation was ok, with the most difficult part being actually getting bags inside the coils. Look to online for help as the instructions are generic and not great. Would recommend getting the t-splitter 1/4 size to get a balanced ride. Only complaintS are the output valve points downward which then Puts your airline closer to the ground than comfortable When driving.



- F4185
by:

Review from a similar Coil-Rite in Vehicle Suspension


Once I figured out I had a bad air line things where a lot better (etrailer took care of me as usual). These work great leveled out my truck and helped my trailer dramatically.


Comments
Still going strong and doing its job. I would definitely recommend and buy again.
Bri - 09/13/2021


- F4175
by:

Review from a similar Coil-Rite in Vehicle Suspension


Easy install in less than 2 hours. I disconnected the shock absorber on one side to get a little more room, but I was still able to slip the bags in on the side I didn't disconnect. On my atlas cross sport, there was a plastic plug at the bottom of the coil in the lower control arm that needed to be removed.



- F4135
by:

Review from a similar Coil-Rite in Vehicle Suspension


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!


Comments
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!
Off2Mtns - 12/14/2018



- F4118
by:

Review from a similar Coil-Rite in Vehicle Suspension


Hi. As requested bu etrailer, this is my one-year review. Overall, works very well. Both units are in good shape, still hold air pressure, They have been on constantly for 4 seasons including our Canadian winter, and no issue. I added some grease on it to minimize friction with coil spring. The only thing that does not work properly is that one of the hoses, which was routed from the spring valve to the supplied inflation port installed on the bumper, does not work, does not inflate spring. I don't know what the issue is, but I have to inflate at the valve directly, which sucks to access. Thanks



- F4176
by:

Review from a similar Coil-Rite in Vehicle Suspension


This is a review after installation. Will comment on performance later. Easy order, fast service. Thankfully used services of mechanic for install. i would not have made it at home. First: used a lift, then had to remove the coil spring as the air bladder would not fit between the coil. After that it was easy to insert. After that the rest was pretty straightforward: feed the air hose, reposition the shock and suspension and the wheels. BIG PROBLEM: my kit came with the hose inserted in the air spring and the other end in a valve. IMPOSSIBLE TO REMOVE as directed. Left the air spring end in place and did the hose rooting with no problem. On the valve side could not disconnect and basically broke it trying to remove. DO NOT CONNECT HOSES BEFORE FINALIZING THE INSTALLATION. Thankfully I contacted etrailer and they are sending a replacement valve. The mechanic will wait to finalize the install at no additional cost. Thank you etrailer for great service, Firestone for a good product but, unless you have huge coils or are ready to dismantle the whole wheel assembly, don’t try the install alone. Leave to professionals the professional’s job. Can’t wait to try it. Will review performance later.


Comments
It works well but again, the installation instructions are sketchy at best. I had installed valve up but the coils are very long and the valve hits the top of the coil upper bumper. It went sideways and I could not inflate. Later I went to my local service center and we reversed the coils and put the valve towards the bottom. My Hyundai Tucson has a lower bumper and there is a hole in the lower suspension arm so we made a hole through the bumper and ran the tube through the suspension arm. Works great. Ran the fill valves in holes through the rear plastic bumper: easy access. Please make Firestone aware of the install info and maybe add a video on your site for your customers. BUT: eTrailer, your service and customer support people are GREATTTT. Thanks
1 y - 12/25/2020


- F4135
by:

Review from a similar Coil-Rite in Vehicle Suspension


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.


Comments
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.
Ryan G - 05/23/2018



- F29ZR
by:

Review from a similar Coil-Rite in Vehicle Suspension


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!



- F4150
by:

Review from a similar Coil-Rite in Vehicle Suspension


Didn't work as advertised. 2015 Nissan Armada has a soft suspension; camper drops rear end 1.25" but this only raised back up 0.25". The camper is well below the Armada's tow capacity so overweight can't be the reason this didn't work. Can't feel a difference going down the road.


Comments
It sounds like you need to distribute your weight in the trailer or whatever youre pulling. Or you could look into a weight distribution system. It will help with the sag and if you are experiencing any sway. Let me know your weight limit and I will look into a few for you.
-- Etrailer Expert Sierra K - 08/18/2021


- F4175
by:

Review from a similar Coil-Rite in Vehicle Suspension


Instructions were straightforward, install went smooth, and the product works great!



- F4155
by:

Review from a similar Coil-Rite in Vehicle Suspension


I put these on two Toyota Siennas ('06 and '09). Installation was "easy" without any special tools to speak of. I didn't have to remove the bottom bolt of the shock. If you collapse the rubber and use the red plugs to hold them without air, they will fit between the spring coils with a little coaxing. So far very happy with both. Have had the vehicles loaded heavily multiple times and the difference in load capacity and handling while full is impressive. Ride can be a little stiff if you leave the air pressure at 35lbs without a load. I find around 25lbs is perfect for average use. Anyone with a Sienna knows that loaded down and the trailer hitch will drag in and out of parking lots etc. No longer with these on! Drilled through the bottom of the plastic bumper on one for the valves. The other one I attached an angle bracket to the plate where you would mount a larger trailer power plug. Would absolutely recommend these to anyone with a Sienna. JL in SC.



- F4150
by:

Review from a similar Coil-Rite in Vehicle Suspension


Installed on the rear coils of a 2008 Nissan Armada after removing factory air shocks and installed a 2" lift. Easy installation and works perfect for my needs. Only suggestion would be to add a "T" to the kit so you can inflate at one point versus two.


Comments
Ryan, are these still working well and how much do you haulwith how much tongue weight. Thank you.
-- comment by: Brent S - 02/09/2016



- F4138
by:

Review from a similar Coil-Rite in Vehicle Suspension


I have a 2003 Acura MDX with 197k miles on it. I have used it for towing a 6x12 trailer for 3 quads. I have also towed many loads of dirt, mulch you name it. The rear sags allot and I just bought a 19' boat. I found this kit on etrailer and ordered it. The box came and it said it was for a Honda Odyssey. I double checked online with various sites and confirmed that all Acura MDX, Honda Pilot, Honda Odyssey, & Honda Ridgeline all have the same coil spring suspension with bumper stops inside the coil. I found a great forum which included pics of someone else that installed similar kit. I used those as references to install mine. Here are the steps to install which took about 2 hours: 1) Jackup car, and suppored with good jack stands 2) Removed tires 3) Using a 7/8" hole saw and made a hole in the middle of the lower control arm. 4) Filed the burrs 5) Installed a 7/8" grommet (not included in kit, I got this a local ACE hardware store) 6) Removed bolt from lower control arm knuckle to lower the arm. 7) The bolt for the bumper stop is not accessible, so I used a hand saw and cut about 2" of the rubber stop out. 8) Compressed the air bag and installed the plug (supplied) to keep it compressed, inserted the airbag thru the coil. 9) I deviated from the instructions which says to use the included plate at the top of the airbag which requires removing the bumperstop. Instead I placed this at the bottom of the airbag, which nicely has a grove in the middle which allows the connection for the airtube to sit in and keep it protected. 10) I routed the airline thru the factory openings in the lower control arm & rear end and up thru the trailer harness opening into the rear compartment in the trunk where the head rests go for the third row. 11) Reattached the lower control arm 12) Install tires 13) Lowered car 14) Inflated the bags to 15 psi which returned the truck to just a little above the stock height. I must say this is exactly what I was looking for. I towed the boat this weekend and didn't sag at all, the ride was much smoother then ever. Even with nothing attached to the truck, the ride is much better. My opinion is that this should be installed for anyone that uses the third row seat, or tows anything at all Acura MDX, Honda Pilot, Honda Odyssey, & Honda Ridgeline as it eliminates the typical rear sag!



- F4107
by:

Review from a similar Coil-Rite in Vehicle Suspension


Enclosed documentation stated there was 18 feet of air hose. However, only 14 feet was included. The mechanic had to get creative to make it work. (4 stars instead of 5 due to the incorrect length in the box). I started to install them myself and realized I didn't want to tackle the task. Glad I handed it off to a mechanic. He reported that it took almost 4 hours to get everything installed and the lines run. (Mercury Grand Marquis). I will add that he highly recommended them and had installed this brand on other vehicles, including his own truck.


Comments
Update: A week after getting them installed they wouldnt hold air. Checked the lines, made sure everything was tight but still has a slow leak. Since the product wasnt purchased from the mechanic, I was going to have to pay to have them replaced, even if the product was covered under warranty. So, after paying several hundred dollars for the product and the installation, just a waste of money for me.
Dale L - 05/23/2021


- F4185
by:

Review from a similar Coil-Rite in Vehicle Suspension


I just installed the Firestone air bags on my 2020 Ram 1500. Fortunately I was able to have a hoist to make installing much easier. It only took a little over an hour start to finish. The only thing I feel should be put in the instructions is after taking the Schrader valve out to let the bags fill back up, it should state to not put the Schrader valve back in. I put the valve back in and wasn't able to adjust air pressure. I took the valve out and it works great. Can't wait for camping season now.



- F4176
by:

Review from a similar Coil-Rite in Vehicle Suspension


A note for those who might have lowered your vehicles: For me, this made it much more difficult to install. My aftermarket lowering springs had the coils closer together, making it extremely difficult to stuff the bladder into the spring, and since they're honeycomb-shaped springs you can't just slip it in the end of the spring either. I got it in but juuuust barely. Considering the price, I'm satisfied. I would have happily paid a few bucks more to get some higher quality hoses and fittings, but it still seems to work well.


Comments
Still working just fine a year later.
Ed M - 01/31/2021

47
413
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Ask the Experts about this Firestone Vehicle Suspension

  • Does Firestone Coil-Rite Air Helper Springs F4130 Fit A 2021 Ram 1500?
    Yes, the Firestone Coil-Rite Air Helper Springs - Rear Axle # F4130 you were looking at are confirmed to fit your 2021 Ram 1500 as long at it is not the Rebel model and the 1000lb load leveling capacity will do a great job of supporting your rear suspension when your 9000lb trailer with 800lb tongue weight is hitched. To keep from having to manually inflate the air helper springs I recommend adding the Air Command Compressor System w/ Light Duty Compressor - Wireless - Smartphone Enabled...
    view full answer...
  • Tee Union Connector For Firestone F4130 Coil Rite Air Helper Springs
    We sure do, you'll want to use the Firestone Union Tee for 1/4 inch air tubing, part # F3025-1. This fitting will allow you to inflate both of the air bags included with your # F4130 Coil-Rite kit to the same pressure at the same time using a single Schrader valve.
    view full answer...
  • Is PSI Adjustable Rating of Firestone Coil-Rite Air Helper Springs Measured After Load is on Truck
    A minimum of 5 psi must be in the air bags at all times, so the rating is measured before the load is on the truck for the Coil-Rite air bags that fit your 2019 Ram 1500, which are the following part: - Firestone Coil-Rite Air Helper Springs # F4130 I have added a link below to a video review for you to check out as well if you'd like to take a look.
    view full answer...
  • Does Valve Core Stay Removed for Firestone Air Bag Kit F4130 When Installed in Air Spring
    The valve core of the bag in part # F4130 gets removed once the bag is in the air spring and then once the bag is installed and in place you instead thread the fitting on the end of the air line into the bag instead of the valve core you removed.
    view full answer...
  • Comparing SumoSprings and Firestone Air Springs for 2020 Ram 1500
    As you mentioned, there are some pretty big differences between a jounce-style spring setup like the SumoSprings # SSR-307-47 and an air bag kit like the Firestone # F4130 for your 2020 Ram 1500, both in terms of install/maintenance and actual performance. The jounce springs definitely offer the easier install and require no maintenance thereafter, while the air bags are bit more intensive to setup and would need to be adjusted based on your truck's load. If you are okay with this though...
    view full answer...
  • How To Help Prevent Sag While Towing with a 2019 Ram 1500
    In order to help prevent sag while towing with a 2019 Ram 1500 (4x4 or 4x2) you have a few options, the SumoSprings Solo Custom Helper Springs part # SSR-307-47 or the Firestone Coil-Rite Air Helper Springs part # F4130. The Coil-Rite Springs are nice because you can adjust them for varying loads whereas the SumoSprings are non-adjustable. The SumoSprings however are maintenance free whereas the Coil-Rite Springs are not. That said, the adjustability of the Coil-Rite Springs exceeds the...
    view full answer...
  • Will Hayes Genesis Brake Controller Work on a 2005 Toyota Tundra Limited
    The Hayes Genesis # HA81790 with the adapter # HA81785-HBC is exactly what you need if your 2005 Toyota Tundra has the factory 7-Way. If your Tundra doesn't have a factory 7-Way then you'll need to use the pigtail # HA81789-HBC instead of the adapter, plus you'll need to install a 4-Way # 119179KIT and the Universal Installation Kit # ETBC7. As far as the air bag suspension goes, the Firestone # F4130 are for new Ram pickups so for your Tundra you're going to need the Firestone Ride-Rite...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Daron K
Edited by:
Daron K
Employee Alex H
Written by:
Alex H

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