To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
When the rear end starts to sag under a big trailer or heavy bed load, these Firestone Airide Red Label Extreme Duty Air Helper Springs step in with up to 7,500 lbs of load-leveling capacity. The air springs mount between the frame and rear suspension to keep your ride height level, improve steering and braking, and maintain even tire wear. By preventing squat and strain on your rear axle, they help your truck handle heavy loads with the same steady feel as when it’s empty.
Every haul is different, so you need control over how firm or soft your suspension feels. These RED Label air springs are adjustable from 5 psi up to 150 psi, letting you fine-tune your setup for towing, hauling, or everyday driving. Manual inflation valves allow side-to-side adjustment so you can balance off-center loads and minimize body roll. More pressure means extra stability under load—less pressure means a smoother ride when running light.

These aren’t ordinary air bags—they’re built to take real weight day after day. Each RED Label spring uses four layers of reinforced rubber with a braided wire girdle that creates a double-convoluted shape for maximum burst strength. Corrosion-resistant metal end plates are sealed with Firestone’s rolled crimp design that locks the bag securely in place, eliminating weak points found in band-clamp designs. It’s the kind of construction that holds up through years of hard towing and heavy hauling without leaks or sagging.

The kit includes vehicle-specific brackets, air springs, hardware, air line, and separate inflation valves for a clean installation without drilling into the frame. Once mounted, the springs absorb road shock and help prevent bottoming out between the axle and frame. Add an optional compressor system later if you want in-cab or wireless inflation—these springs are ready for it right out of the box.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews

Lazer S.
10/7/2025
That should not be happening, James. What kind of load are we talking about? And how much pressure are you running in the bags? Also, is it loaded ride or unloaded ride that you are unhappy with?

Victoria H.
3/21/2025
Hi Brad, I can understand your concern but please be assured that this isn't too abnormal. The chances of getting them perfectly perpendicular are much more slim. The "ballooning effect" will not change the strength of your air bags. As long as you followed the provided directions, and made sure you alternated back and forth between the two U-bolt nuts as you tighten them down, you should be more than good to tow. Firestone may be able to give you a more detailed reason as to why this occurs with their air bags, but this isn't something we haven't seen before.



Brad S.
3/21/2026
Firestone was very responsive and thorough in addressing my concern, and assured me that there wasnt any problem with the installation. The springs have worked very well. A 15,000 lb., dry weight, 5th wheel is the heaviest thing I tow and when loaded up I set the pressure to around 70 lbs. for a smooth, balanced ride. I would recommend these to anyone looking for air springs. They are my second set of Firestone brand air springs, I used those for about 6 years on everything I towed, 2,500 lbs. to the 5th wheel, and they never failed me.

Scott
2/10/2025
Working great after one year


Brooke M.
12/2/2024
Great review, Steve, thank you! I think others will find this helpful, too.
Do you have a question about this Vehicle Suspension?
Condition: Surface Scratches
Notes: Item has minor cosmetic scratches.
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

















Kate F.
6/25/2026
Thanks for the pictures Jeff! Glad it helped with squat, the suspension of your truck thanks you. How was the install? Did you run into any hiccups, or was it smooth sailing?