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When towing or hauling heavy gear, sagging suspension can make steering sloppy and braking unpredictable. The SuperSprings Custom Suspension Stabilizer and Sway Control Kit adds 1,400 lbs of rear suspension support by bolting directly above your factory leaf springs. These helper springs engage automatically when your rear suspension flexes, lifting and leveling your truck to prevent bottoming out while keeping the ride steady under load.
Crosswinds, passing semis, and uneven corners can throw a loaded truck off balance. These SuperSprings act like sway bars to keep body roll in check—reducing sway by up to 30 percent. As your factory springs flex, rollers on each end of the helper spring react to stabilize the suspension, so you stay in control even when the road or wind tries to push you around.
No two loads are the same, and these helper springs let you dial in exactly how much support you want. The shackles include multiple bolt-hole positions so you can set them up for constant heavy loads, maintain factory ride height, or find a balanced setting that gives you extra support without stiffening the unloaded ride.
Unlike air systems that need constant pressure checks or hose maintenance, these helper leaf springs do their job automatically with no air lines or adjustments to worry about. The bolt-on design installs easily with no drilling required, and dense polyurethane pads seat between the springs to prevent shifting. Built from SAE5160H high-grade shot-peened steel, they deliver reliable performance that extends the life of your brakes, tires, and factory suspension over time.
Customer Satisfaction Score:
88% were satisfied with this product
12% of customers were not satisfied
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!
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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?