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Heavy trailers, campers, or bed loads can make the rear of your truck sag, throwing off steering and braking. The SuperSprings Custom Suspension Stabilizer and Sway Control Kit adds up to 3,400 lbs of extra support by mounting above your factory leaf springs. The helper springs automatically engage when weight is applied, lifting the rear and keeping your truck level so you don’t bottom out or lose control under load.
Big rigs passing or gusty winds can push your truck around when it’s loaded. These helper springs act like a sway bar by reinforcing the factory springs and keeping them from twisting. That added stiffness cuts body roll and reduces sway by up to 30 percent, keeping your setup stable whether you’re cornering through mountain roads or rolling down windy highways with a trailer in tow.
There’s no tubing or air to monitor—these springs adjust automatically as the load changes. Rollers at each end activate when the factory springs flex and deactivate when unloaded, giving you support only when needed. That means a smoother ride with no crawling under the truck to add air or mess with valves.
Not every load is the same, so this kit lets you choose how much lift or firmness you want. The shackles have multiple bolt positions that let you set for constant heavy loads, maintain original ride height, or find a balance between support and comfort. It’s easy to dial in the setup that matches how you actually use your truck day to day.
Installing the system is straightforward—just bolt it on above the existing springs using the included hardware. Poly spring pads keep everything seated securely for models that need them, and once installed there’s no maintenance required. The extra support helps extend the life of your brakes, tires, and factory suspension while keeping your truck ready for whatever load comes next.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Great product !
work's Great , I will be purchasing mor e.
Easy to install
Item is in great condition but the shipping box was completely torn up
i have these on a couple of trucks and they work great.more reliable than air bags
Took the squat out of the F250 when pulling our fifth wheel.
Their website makes it easy to find the right Superspring for your truck. They install easily and work great. The only thing that was a surprise is that I had to use a 6" c-clamp to compress the spring enough to get the rollers on. No big deal, but nothing was mentioned about a spring compressor on the "tools needed" list.
Love the super springs. They keep my truck from sagging which gives me complete vehicle control. Would recommend for someone that tows often.
Correct product shipped promptly. Shipping carton was completely open and nearly ripped in half, but all components survived and made it to me.
Installation time was about 2.5 hours. I'm not a mechanic by any means, but overall it wasn't too bad. A couple of things for F250 owners (mine is a 2011):
1. You will have to remove a brake line bracket on the driver's side to install the rubber spacer. I re-installed the bracket onto one side of the U-bolt that is installed on the spring.
2. There is no way to insert the roller bolt on the front of the driver's side spring - not enough clearance. I had to completely remove the swing arms, pre-install the roller bolt, and the piece it back together once in place. Wasn't hard, just took some extra thinking.
3. The thing I was most worried about was compressing the spring in order to insert the rollers. Obviously the front goes on no problem. For the back, I chose to use a small bottle jack. I placed it on top of the SuperSpring and extended the jack so it pushed up on the bottom of the bed of the truck. This easily and quickly compressed the spring.
Unloaded ride height was unchanged. I'm hoping to test it pulling our travel trailer in the next couple of days and will update on how it works under load.
Doesn't fit the truck
After listening to my new trucks squeaky suspension for almost a year and installing air bags that were useless, I tried these springs and these are the best investment I’ve made for my work truck.
No more squatting and the best part no more squeaking!
The supersprings are simple to install. Good instructions. They have done a great job on helping with weight. The Poly Spring Pads do not last. I have had this setup for 7 months and the pads are falling apart.
Troy
12/6/2020
Installed it about a year ago. The springs are working out great. I don’t have the sagging of the rear end like I use to when towing. I have had to replace the pads once, but besides that, it’s a awesome system.
Had a problem with parts missing was taken care of and parts were sent right away I buy everything I need for my trucks and trailers from y’all quick shipping and great help
Thank Yoi
Brooke M.
11/22/2024
Glad to hear we got you on your way again! Thanks for taking the time to leave a review! We are here for you if anything else comes up :)
they really provide the lift and stability as advertised.
Info for this part was:
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Charles
2/23/2026
I could not be happier with this product,