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When you hook up a trailer or fill the bed with heavy gear, these helper leaf springs take up to 3,500 lbs of rear suspension load to keep your truck level and your ride steady. They mount right above your factory springs to prevent sagging and reduce sway by up to 30 percent. With the SuperSprings setup carrying part of the weight, you’ll notice better braking, steering control, and less rear-end squat when towing or hauling.
Crosswinds, passing semis, and sharp curves can all make a loaded truck feel loose. These helper leaf springs act like sway bars for your existing suspension, keeping the factory springs from twisting under stress. The result is less body roll and a more planted feel on the road, even when towing through windy conditions or uneven terrain.
You don’t have to adjust anything when the load changes. Rollers on each end of the SuperSprings automatically activate when your factory leaf springs flex under weight and deactivate when unloaded. That means consistent support only when you need it—no tubing, air pressure checks, or manual adjustments required.
Every setup is different, so these helper springs let you choose how much lift and support you want. Use the top bolt holes on the shackles for maximum load support and extra ride height under constant heavy loads. Go with the lower holes to keep a more stock ride height when unloaded. The mixed setting balances both for drivers who carry changing loads or want a middle ground between comfort and firmness.
Bolt these helper springs right above your existing leaf packs using the included shackles—no drilling required. Dense polyurethane blocks seat between the factory spring tops and the underside of the SuperSprings to prevent shifting. Once installed, they’re maintenance-free with no air lines, compressors, or pressure checks to worry about, making them an easy upgrade that adds stability without adding chores.
This kit is designed to fit a vehicle with factory top overload springs. As shown in the picture above, a top overload spring sits above the factory leaf spring pack.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Julian
2/23/2023
It works good only problem is rubbers in between springs rip after awhile and super springs start shifting
Katrina B.
10/7/2022
I see that you gave your experience with etrailer 1 star. If you give me more information about why you are disappointed in us, I will be happy to assist you.
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?
Nick S.
12/2/2025
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
Do you have a question about this Vehicle Suspension?
Condition: Missing Parts
Notes: Item is missing all of the spacers, brackets and u bolts with nuts. Some scratches and paint damage present.
Info for this part was:
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Ritch
8/12/2021
It still working Great. Carrying the loads like Desscription stated