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Towing or hauling heavy gear can make your rear end sag and your steering feel light. These SumoSprings Rebel helper springs add up to 3,000 lbs of support at 50-percent compression so your ride stays level and steady. They help your factory suspension handle extra weight, keeping traction and braking solid when the load is on.

The two-piece spring setup connects at the top and bottom when loaded but separates when the truck is empty. That means you get full suspension travel and a smoother, more comfortable ride on rough pavement or off-road without the stiffness that solid bump stops can cause.

Each spring works on its own side of the vehicle to even out off-center loads and reduce body roll through turns. Whether it’s a gust of wind, a curve, or a steep driveway, you’ll feel steadier control with less sway or porpoising front to back.
These maintenance-free springs are made from microcellular urethane that resists oils, road salts, and UV rays. They hold up in conditions from -25 F to 200 F and expand vertically instead of sideways so they won’t get damaged in tight spaces. No air lines or pressure to manage—just bolt them on and go.
Customer Satisfaction Score:
73% were satisfied with this product
27% of customers were not satisfied
Ratings & Reviews

Claire H.
10/14/2026
Glad to hear it! I'm a big fan of SumoSprings because they're so easy to install and don't require any maintenance after. What kind of trailer are you hauling?

Rick
4/15/2026
The springs work great. After a year in service, they are like new. We use this truck as a rental equipment delivery truck. We pull a 26ft gooseneck tilt deck trailer that is 16K rated. The ride is great and the springs handle the load nicely with no sag when loaded. We have added these springs to all 6 of our 1-ton delivery trucks.

Katrina B.
5/23/2023
These will not fix an already sagging suspension. These are designed to help support suspension but leaf springs need to be replaced they will not fix that much sag. I would recommend using some airbags, like part # F2703, in place of Sumo Springs. You will need a compressor, like part # F2097 for the airbags.

Steve
5/16/2021
Outstanding!
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Jesse M.
9/10/2026
Hey Steve. Thanks for the feedback. This Rebel kit is designed for vehicles carrying variable heavy loads, so some contact at unloaded ride height can be normal depending on the application. If this is a dually, keep in mind this particular kit is intended for commercial applications only, where earlier engagement helps support the heavier loads these trucks regularly carry. I’d still verify the brackets and spacers match the instructions, but the Sumos contacting before the factory overloads does not automatically indicate a problem with this setup.