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Heavy trailers or bed loads can make the rear end sag and the ride feel sloppy. This SuperSprings helper spring kit adds up to 1,100 lbs of support above your factory springs to keep your truck level and stable. It lifts the rear when loaded and prevents bottoming out so you maintain steady steering, braking, and headlight aim when hauling or towing.
Crosswinds, passing semis, and quick turns can cause sway that wears you out on long drives. These helper leaf springs act like sway bars, holding your factory springs steady and reducing body roll by up to 30 percent. That means less rocking and more control when cornering or towing through wind or uneven roads.
There’s no tubing or air pressure to mess with here. Rollers on each end of the SuperSprings automatically engage when your stock springs flex under load and back off when the load is gone. The result is quiet, maintenance-free operation that adjusts itself on the road—no crawling under the truck to make changes.
You can choose how much support you want right from installation. The shackles have several bolt-hole options so you can dial in a setting that maintains your original ride height, compensates for spring fatigue, or increases load support for constant heavy loads. It’s an easy way to match support to how you actually use your truck.
Installation is simple with bolt-on mounting—no drilling required. Because these springs sit above the axle, the included mounting kit adds 2-inch brackets that act as fulcrum points for quiet, stable operation when unloaded. Once installed, you’ve got extra support ready to go every time you hitch up or load down.
Alternate Instructions
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.