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Heavy trailers, campers, or bed loads can make the rear of the truck sag and throw off handling. These SuperSprings helper leaf springs add 950 lbs of rear suspension support to keep things level when towing or hauling. They bolt on above the factory leaf springs and engage automatically when weight is applied, lifting the rear end and keeping steering, braking, and headlight aim consistent under load.

Crosswinds, corners, and passing semis can make a loaded truck feel unstable. SuperSprings act like a sway bar by keeping the factory springs from twisting. The system cuts sway by up to 30 percent so your ride stays planted through curves and gusty conditions. The rollers at each end react instantly to shifting weight for a more stable ride when towing or carrying heavy gear.
Whether you haul heavy every day or just want to firm up older springs, the adjustable shackles let you dial in support. Choose an upper hole for maximum load support and ride height, a lower hole to maintain factory ride when unloaded, or a mixed setting that balances comfort and lift. Each option gives you control over how much help the springs provide without changing everyday ride quality.
Unlike air systems that need hoses, compressors, and pressure checks, these helper leaf springs do all the work on their own. When your stock springs flex under load, the SuperSprings engage automatically; when unloaded, they back off for a normal ride. There’s nothing to adjust or maintain—just consistent support that saves wear on your brakes, tires, and factory suspension over time.
Installation is straightforward with included mounting hardware for trucks that have OEM leaf springs above the axle. The kit includes 2-inch brackets that act as fulcrum points so the springs operate quietly when unloaded. Just bolt them in place using basic tools—no drilling needed—and you’re ready to tow or haul with more confidence right away.



Ratings & Reviews

Mike L.
2/8/2019
If you look at page 4 of the instructions which Ive linked for you, you can see photos showing a single leaf spring set up just like whats shown in the photos you provided thanks for the photos!. Im guessing that page was not included in your instructions for some reason.
Helpful Links

Timothy
2/9/2020
Springs are working wonderful after I figured out the install,. The initial problem was all my fault for being a man and not really reading the instructions haha. All is well

Brooke M.
6/11/2025
That's awesome, Douglas! Great to know these have been the solution you were looking for. The Timbrens are known to be pretty stout for sure. I can totally see how these would have the right amount of give needed to support the camper and have a smooth ride :) Have you taken out the truck and camper recently?

Conrad
8/19/2021
After about one year, these are still working great. I typically use my truck for pulling my 5th wheel. But - even when empty, you dont really feel anything different. When the camper is on, it sure levels the truck and camper out perfectly, giving you a great ride.

Victoria H.
11/11/2024
Hi Chris, there should've been a hardware kit for suspensions with leaf springs that sit above the axle. Please let me know if this is the hardware kit that was missing, and I can help you get this resolved.

Larry P.
10/3/2022
They work great, they improved the rear suspension so there is no more bottoming out when I pull the 5 wheel Rv .

Mike L.
10/1/2026
UPS is currently doing an investigation, once they figure out what's going on we'll get you an update. I'm very sorry for the delay.
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Howard
11/9/2020
One Year later still no sag.