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Hauling a camper, boat, or bed full of gear can make the rear end sag and change how your truck handles. The SuperSprings Custom Suspension Stabilizer and Sway Control Kit adds up to 2,500 lbs of extra load support by installing helper leaf springs above your factory springs. They automatically engage as the load increases, keeping your ride level, reducing squat, and helping distribute weight through the frame points designed for heavy loads.
Crosswinds, passing semis, or sharp corners can make your truck rock and sway. These helper springs act like sway bars for your rear suspension, reducing body roll by up to 30 percent. By limiting how much the factory springs twist under stress, they improve steering control and stability when towing or carrying heavy weight. The result is a planted, predictable feel on the highway and smoother cornering when the load shifts.
Every truck carries weight differently, so this system lets you dial in support where you need it most. The shackles that attach the SuperSprings offer several mounting options—choose a higher setting for constant heavy loads or spring fatigue, a lower setting to keep factory ride height and comfort when unloaded, or a middle ground that balances both. With adjustable tension built right into the hardware, you get a tailored ride without complicated tuning or air management systems.
Adding serious suspension support doesn’t have to mean extra upkeep. The SuperSprings kit bolts on above your existing leaf springs with no drilling required. There are no air lines or pressure adjustments to worry about—the rollers at each end engage automatically under load and back off when empty. Once installed, the system quietly does its job every time you hitch up or haul out, extending the life of your brakes, tires, and factory suspension in the process.
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
Ratings & Reviews
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!
Jenny N.
11/5/2021
Thank you for your feedback. The installation manual is meant to be a guide and it is recommended that the install is done by a professional or a person with sound mechanical knowledge.
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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?