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When the rear of your vehicle squats under gear or trailer weight, handling and braking can get out of line. The SuperSprings Custom Suspension Stabilizer and Sway Control Kit adds 1,900 lbs of extra load support by mounting directly above the factory leaf springs. As the stock springs flex, the rollers on each end of the SuperSprings engage to lift and stabilize the rear. The result is a level stance that stops bottoming out and keeps steering and braking consistent even when you’re fully loaded.
Wind from passing trucks or sharp curves can make a heavy vehicle feel loose. These helper leaf springs work like sway bars for your rear suspension, reducing body roll by up to 30 percent. By keeping your OEM springs from twisting, they make highway driving steadier in gusty weather and cornering more controlled when weight shifts side to side.
Unlike air spring systems that need constant PSI checks or hoses to manage, SuperSprings automatically adjust to your payload. The rollers activate only when your factory springs flex under load and release when they don’t, so you get support only when it’s needed. There’s nothing to inflate or monitor—just consistent performance mile after mile with no upkeep required.
Every setup and load is different. The shackles that connect the SuperSprings give you several installation options for tuning ride height and support. Use the upper bolt holes for constant heavy loads or older suspensions showing fatigue, the lower holes to maintain factory ride feel, or a mix of both ends for balanced comfort and lift. It’s an easy way to match your suspension response to how you actually use your vehicle.
Installing extra support shouldn’t mean tearing into your truck. This kit bolts right on above your existing springs with no drilling required. Dense polyurethane blocks seat between the SuperSprings and factory springs to prevent shifting, making for a clean fit you can handle with basic tools. Once installed, you’ve got an automatic helper system that strengthens your suspension and extends the life of brakes, tires, and factory components.
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
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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?