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 heavy cargo or a trailer makes the back end drop, these helper leaf springs step in to hold everything level. With a 2,600-lb capacity, the SuperSprings Custom Suspension Stabilizer and Sway Control Kit bolts above the factory springs to keep your truck from sagging or bottoming out. The rollers on each end automatically engage as the load flexes the OEM springs, adding support only when it’s needed. That means a level stance under weight without constant adjustments or upkeep.
Wind gusts, passing semis, or tight corners can make a loaded truck feel loose. These helper springs act like sway bars by keeping the factory springs from twisting, reducing sway by up to 30 percent. The result is steadier steering and better control when you’re towing or hauling on uneven roads. You’ll feel the difference when crosswinds pick up or when you corner with a full load—the vehicle stays planted and confident.
Not every load is the same, and these springs let you match your setup to your needs. The shackles provide several installation options: one for constant heavy loads or older suspensions that need extra lift, one that keeps the original ride height and comfort, and a middle setting that balances both. It’s a simple way to tune how much support you get without adding air lines or manual adjustments.
Built with 3/4" hardware and dense polyurethane spring pads where needed, this kit adds serious durability for repeated hauling. There’s nothing to inflate, no tubing to check, and no air leaks to worry about—just bolt them on and go. By taking strain off your brakes, tires, and stock suspension, these SuperSprings help extend component life while keeping your truck ready for work, travel, or whatever heavy haul comes next.
Ratings & Reviews
John
9/3/2026
The product works great after a year. I highly recommend the super springs for any heavy loads. After they are installed you never need to worry about the load.
Jerry B.
9/3/2026
Gwendolyn Y.
4/23/2026
Thanks for your feedback, Bob! We’re glad to hear the shackles made a noticeable improvement in your ride quality. We appreciate you pointing out the fitment challenge and the issue with the instructions, I'll pass it on to SuperSprings.
Javier G.
10/21/2025
They are working out fantastically! Now we dont bottom out and damage the sewer dump. Weve been all a long road trips and nothing is bothering us now in regards to suspension.
T
3/6/2026
Works great towing and seems to help with some sag and roll. I use them along with airbags so towing my fifth wheel is now worry free.
Mike L.
9/24/2025
Once you get the chance to tow your 5th wheel, please let us know how you like them!
Do you have a question about this Vehicle Suspension?
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.
Nick S.
12/1/2025
That is great to hear! I am glad this addition has worked well for your setup. What RV do you have that you added this too?