Product Specs:
Vehicle Suspension
Rear Axle Suspension Enhancement
Jounce-Style Springs
Extra Heavy Duty
Timbren
8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.
Video of Timbren Rear Suspension Enhancement System
Average Customer Rating: 4.7 out of 5 stars (4956 Customer Reviews)
8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.This Rear Suspension Enhancement kit were so easy to install, I was almost sure I missed something.
They installed in less than an hour. I was able to place my floor jack under the ball mount to raise the rear end enough to remove the old mounts and simply install the new ones.
Hooked up my 28' rv to my Silverado 1500 and they worked as advertised. No front end sag and I feel safer towing it.
Customer service helped me find the right product I needed without dishing out a lot of cash!
Frank R - 06/19/2021From Mickey Mouse to Mighty Mouse in minutes. Pulling a 7700lb travel trailer with a 2013 Silverado w/ tow package and h/d cooling. Even with W/D hitch truck was bouncing uncomfortably. The Timbrens were an instant fix. Dips in the road are no longer a problem, and I think the sway control in the hitch seems to feel more solid as well. Unloaded ride is unchanged except for really major dips (and Texas roads have a few). If you are like me and take your truck to places your Mom would not recommend, a good underbody wash and glasses to catch any falling junk during the install are highly valued
Larry S - 10/17/2017I have a 2018 GMC Sierra 1500 pick up truck (elevation package) in which I added a 3.5 inch ROUGH COUNTRY KNUCKLE LIFT KIT with Front Struts. The rear distance between the bump stop's metal cup just under the frame and the the rear axle is 8.25 inches with an empty truck bed and a quarter tank of gas. I gave the professional this information on my truck and what I needed; they e mailed back the kit with only 1.5 additional spacers on each side of the truck, Ok. I still came up with 2.25 inch space with an empty truck bed on both sides. I feel More TIMBREN PRODUCTS WOULD be SOLD if websites carried information All together for the average people to buy at their finger tips. It would have been easier for me if the following were all grouped together for my truck :
TIMBREN Rear Suspension Enhancement System
TGMRCK15S (that has 3/8 bushing) which is actual about 4.5 inches not 5inches in
height.
FOR TRUCKS with LIFT KITS spacers are required with the same 3/8 bushings
1 inch spacer (that has 3/8 bushing) A25723-90AHOO
1/2 inch spacer (that has a 3/8 bushing) TA25722-90POO
I required an additional 1 inch spacer on both sides than I was e mailed. It would also be easier if I could buy the additional bolts grouped with my additional 2.5 spacing on both sides of my truck on the web site, than going to the hardware store. I would pay the additional cost. So all together for my 3.5 ROUGH COUNTRY LIFT, I required 2.5 inch spacers on both sides with the 4.5 height kit which = 7 inches . I haul my 4 wheeler in the bed and broke a level spring years ago. On other occasions I place fire wood in the truck bed. TIMBREN is the way to go, it will be there when I put weight in the bed of truck; be it a 4 wheeler or wood. Friends of mine have air bag systems that leak over time and are much more in price. You can not go wrong with TIMBREN. When installing, remove salt and sand near top of original bump stop bolt, apply PB blast wait 10 minutes use a breaker bar with easy removal. Go to the hardware store to get longer bolts. When installing have to jack up the back of the truck under the towing package to get space to use tools to add new TIMBREN PRODUCTS.
Joe - 03/23/2022I just installed these on my 2021 GMC Sierra 1500 AT4. It was really easily done and only took .5 hour total. Because the AT4 is slightly lifted I did use the spacers review separately. I am towing a pretty heavy 2 axle horse trailer with a tongue weight between 6000 and 7000 pounds which the truck can handle. When I hitched up with the original bump stops the hitch dropped 4", the frame over the rear tires squatted down 2 and 3 quarters " and the frame over the front tires lifted 3 quarters". After the installation the hitch dropped only 2 and 3 quarters", the frame over the rear tires squatted down 1 inch" and the frame over the front tires lifted . Test drive went well with the same smooth ride with no load as there is no contact. Pulling the trailer went just perfect, no sway due to the trailer design, and the load was very stable with very little bounce.
It's okay. I believe I'm going to replace it with an air bag system though, as currently every time I hit a bump the springs make the small gap to the top of these and I'm always hitting the bump stops.
Jenny N - 05/09/2022
Jenny N - 05/09/2022Added these Timbrens with two 1" spacers on each side on a 2011 GMC Sierra with a 2" lift. Fit great, easy to install. Was more work getting old bump stops off than installing the new Timbrens with spacers. I did need to get 2" longer bolts than what was included to complete the install, but that was to be expected.
Good customer service poor shipping box came open
Jenny N - 04/21/2022I have a 2014 Silverado 1500 and 24’ gooseneck weekender horse trailer. I just got the trailer and the guy I got it from recommended the Timbren’s to me. When I first dropped the trailer on my truck empty it squatted me 4.5” in the rear. The trailer weighs just under 5,000 pounds empty. When I first pulled the trailer empty I wasn’t sure about the Timbren’s they seemed really bouncy on my road. My road is not the smoothest road though. This past weekend I loaded 3 horses into my trailer and traveled about 1.5 hours away and I was blown away at how well my truck drove and handled fully loaded. With the Timbren’s my truck barely squats now. The trailer rode a hundred times better loaded with horses, which most big trailers ride bad when empty anyway. As far as driving with no load at all the truck rides just like normal. However if you hit a big hump in the road sometimes it will be enough to make it hit the Timbren’s and gives a little jolt. As far as recommending I definitely recommend these especially if you have a 1/2 ton truck and pulling a fairly heavy load.
They did there job to help level out the truck when hauling however the ride was rougher than I preferred so I opted for airbags instead.
The supplied bolts are too short. Finding the right bolts added to time to do the install.
The jounce springs are 1/2 inch from axle. I'm sure the ride will be very harsh even when not loaded...
Received yesterday (quick shipping!), installed today on 2015 GMC Sierra 1500 4WD Crew Cab short box. What a difference between the Timbren's and OEM bump stop from GMC. Installed for towing large travel trailer. Used floor jack under rear hitch to raise up truck to get enough room for socket to install bolts. Use 10mm socket to remove OEM bolt & bump stop, use 17MM socket to install new bolt and Timbren. Very east installation process.
They work exactly as they are promoted too, easy to install. Ive been using them for one year now with no issues. I should have listened to my friends and bought them sooner.
I can't wait to use these and see how they actually work with my 29' x 7.5' wide snowmobile trailer.
For reference to those with an AT-4 GMC, I have a 2020 and with a 1/2" spacer and the timbren (it was actually only 4 1/2" tall, not 5" like the images showed) have about 1.25" gap between the bottom of the timbren and the axle stop when unloaded. I was under the impression that the timbren itself was 5" based on the image in the kit on the website, #tgmrck15s, so I'm a 1/2" shorter than I wanted but I will run it for a while and see how it looks when loaded with my trailer before going any thicker with a spacer.
Etrailer expedited the package early due to returning customer. Parts delivered in double packaged boxes. Installed in 1/2 hour after fighting the old rusty bolts. Have not had a chance to load test yet. Will give another follow-up review after truck and trailer are loaded.
Much bouncier ride than anticipated after installation. I followed etrailer’s recommendation in choosing them but I’m wondering if air shocks would not have provided a more acceptable ride.
Great product easy to install, took me longer to take the tire off and on than install the product. I hooked up the truck to the trailer and before it stood at 39 inches and when hooked up it dropped to 37 1/2 from the floor to the wheel weld. Overall ride is comfortable with an empty truck load. Purchesed Sunday and was delivered by Wednesday. Great product
I have a 2018 Sierra and these Timbren are terrible. They are way too hard and when you hit a bump they slam hard on the axle. I plan to put my originals back on.
Mike L - 09/15/2022Even using equalizing bars, I was experiencing "motorboating" when towing our travel trailer. I've had several air bag setups in the past and have always had to add air daily, so I bought the pair of Timbren suspension enhancement blocks.
Mounting took about 20 minutes.
The Timbren blocks stopped the "motorboating."
Another benefit, is my ride stays as factory without messing with air pressure at all.
Also, now I'm able to move my travel trailer short distances without installing the equalizing bars at all. My pickup stays nice and level.
Mark V - 06/07/2021I actually found that airbags worked better for my truck and trailer. I ordered those from you as well. May I return the Timbrens for at least partial store credit?
Jenny N - 06/02/2022The corner of the box had significant d amage.
Jenny N - 02/20/2023Working great, no moving parts or air lines to go bad. Very simple concept just a little expensive but would definitely purchase again if I get a different truck.
Matthew - 05/10/2022Good quality and I liked the installation videos.
Good product, simple to install. Works as it was intended to.
Installed these on my 2016 Silverado. Gained almost 3/4 inch in suspension height back with a 26 foot travel trailer on the back. Much nicer ride as well. I’ll be getting them for the front when I get a plow. Very easy to install too.
Install was straight forward; the old stops fought me a bit- a few shots of PB helped. Great install videos on your website to help me. Looking forward to towing my camper with the Timbren’s installed! I decreased 1 1/2” of rear end squat when I hooked onto my 7000 lb camper (before attaching my weight distribution bars.)
Thanks!
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Product Specs:
Vehicle Suspension
Rear Axle Suspension Enhancement
Air Springs
Heavy Duty
Firestone
4,800-lb Capacity. Ride-Rite air springs enhance your factory suspension for safety and stability when you are hauling heavy loads. They reduce strain on your rear axle, keep your vehicle level, and adjust to load size for a consistently smooth ride.
Video of Firestone Ride-Rite Air Helper Springs - Double Convoluted - Rear Axle
Average Customer Rating: 4.7 out of 5 stars (1883 Customer Reviews)
4,800-lb Capacity. Ride-Rite air springs enhance your factory suspension for safety and stability when you are hauling heavy loads. They reduce strain on your rear axle, keep your vehicle level, and adjust to load size for a consistently smooth ride.Great product! The Firestone airbags for my 2012 Chevy Silverado 1500 fit perfectly! Thanks again
Great setup! Bought the helper springs to help truck sag when towing and having camping gear in the bed of the truck. The before and after shows the trailer connected with 600 pounds of tongue and 300 pound tent in the bed of the truck
Installed these in the driveway today! Installation went flawless can't wait to put some weight on them try em out gonna come up with a gauge and single fill set up soon.....* THE ENTIRE TEAM AT ETRAILER WAS GREAT WITH MT QUESTION AND LINING UP EVERYTHING I NEEDED I LOVED THE TRACKING AND ALL THE FOLLOW UP STUFF
I have installed at least a half a dozen of the Firestone airbags and they work great.
The suspension kit installed pretty easily, and works as advertised. The downside for me was the quality of the airlines and valves. One side has a slow leak and I'm forced to touch it every couple of days. My plan is to fully replace the lines and valves.
After emailing a fitment question to etrailer and having Erik B answer it in detail and correctly, I ordered this kit to install on my 2008 GMC Sierra 1500. It fit perfectly. From start to finish it took about 2 hours and I wasn't in a hurry. The kit came with everything I needed except for a few extra zip ties for the air line, but I had those anyway. The instructions that came with the kit are sufficient and easy to understand, but watching the video that Erik at etrailer linked to my question first made it much easier to understand how the installation should go.
I ordered the air bag kit because even with the weight distribution hitch on my truck, it still sags the rear about 4 inches before the air bags were installed. I haven't got to use the trailer yet, but I can't imagine having to run more than 40psi in the bags for my 10,000lb trailer with 1100lb tongue weight.
After a lot of consideration between add a leaf and air bags choose these and don’t regret it able to air them up when hauling my camper but remove the air when just driving around. Install was really easy and took about an hour.
Bought this about 2 months ago I finally was able to installed over the weekend and oh boy! what I missed not installed it as soon as i got them I haven’t haul nothing yet but just the change on the riding is GREAT! I travel around 600 miles a week or more and this is one of the best investments I have done for my truck, in two weeks I will be traveling for a longer distance but this time loaded I will try to come back and post about it, also I did get the air lift system AL25980 connected to a bus box I have on my truck for the rest of my accessories and have on demand air in the mean time if you people can afford these or any air suspension system do it! ETRAILER you all are great as well fast shipping very well packaged and you all have everything your customer needs to install and or troubleshoot any issue I will definitely continue shopping with you guys.
Installation was not hard at all, I definitely recommend having an impact wrench handy though. The airbags definitely improved how my toy hauler towed!! They took out all sag and reduced the roughness on torn up highways. The pic shows my truck back to factory ride height with the bags.
Jason C - 07/02/2020I don't typically do reviews but I was so excited about these I just had to share. installation was fine, it took me about 2 hours. Watch the installation videos, it helps. I thought I needed a 3/4 ton truck just to put some heavy loads in my bed a few times a year, but not anymore! See the picture I loaded. that is my Silverado 1500 with approximately 1,500lbs in the back (there are a bunch of concrete curbs in the back). Can you tell, I can't. That's with only 30lbs of air in the springs. I have used air shocks in the past but forget that, no comparison. I will say I did not get the series to fill itself which I will probably upgrade to soon, but for now, these are exceeding my expectations.
Super happy with the air helper springs. They performed great while pulling my boat. Saves me thousands by not having to buy a new truck!!
As always, etrailer.com had great service and very quick shipping.
2018 Silverado Crew Cab 1" lift. Easy install. Only hang up the emergency brake line is up against driver's side bag (see pic)
The best vender I ever got. Shipping was fast and was what I ordered ( the right parts) .will always use The trailer when I can. :). :)
This was way easier to install that I was imagining. Watch the installation video and you'll have no problems. I didn't drop the spare or even jack up the truck at all. All of the parts and hardware are of great quality. Nothing cheap or flimsy.
I ended up mounting the air valves inside the bed by fishing the hose up the bed stake and using the factory holes in the bedside.
It took me about two hours to install on my 2012 GMC Sierra 1500 All Terrain Extended Cab.
5 Stars all the way.
Thanks for the information. I received the airsprings in good condition and have installed them on my truck. Attached is the photos of my installation. Everything installed great with no problems.
Easy to follow instructions made for an easy installation. This was exactly what my truck needed.
Right now my firestone ride rite
air spring helper is not working I am hoping it's a easy fix
It needs additional attachments to the upper brackets otherwise it makes rattling noises
I had to drill the brackets and install u clamps to the frame.
Jenny N - 03/02/2022 Jenny N - 03/02/2022This is the second set of airbags I have purchased from etrailer and my third truck using them, I have yet to utilize this new set as for I just installed them on this past Thursday and will get to evaluate them tomorrow pulling my camper. The last set on my last two trucks, I was extremely happy with their performance. as well as extremely happy with the service I get anytime I deal with etrailer. Cathy T is always very helpful.
Quickly arrived and pretty easy to install. I filled to approx 20psi just as a daily driver but already can tell a big difference in the overall handling of the truck. The rear end feels stabilizes quickly when hitting bumps and the body rill is greatly reduced.I have yet to try them with a heavy load but I have no doubt they will perform great. 2008 GMC Sierra 1500.
Ben - 06/04/2019Very easy to install. Works well on leveling my truck. Looks real good. Great product!
Opened the box and in awe, I called my service guy, but he couldn't get to it for a week, so I started in. Rolled my truck up on some blocks. Removing the stock rubber bumper was easy. Then the installation. Bolting the upper housing onto the frame was the first job and was easy, except I forgot to include the spacer. So two steps later I had to unbolt it , insert the spacer and re tighten it. The rest of it went well and is now ready for the air line. Quit for the day and this morning will install the other side, which should go much easier now that I have learned from the first side.
So it looks hopeful that even I can accomplish this. As a 75 year old retired surgeon that is saying a lot!
Stay tuned for next installment which should review performance.
Steve - 03/10/2019Wasn't had to install. Directions were perfect.
So far, I would give this product a 5 star rating. I must say, the installation directions from Firestone are a bit lacking. However, the installation video from etrailer made the installation a snap. I completed the installation in about 3 hours. I'm confident these Ride Rite bags will improve my hauling and towing performance when I go on long fishing trips fully loaded with gear and pulling my 19 foot boat. Also, etrailer was as good as their word when I asked them to honor their price pledge.
Ken - 05/09/2019Great product and excellent customer service from etrailer to fulfill the order on a tight schedule! Their installation video was also very helpful as the paper instructions with the product left something to be desired.
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