SuperSprings Intl Vehicle Suspension
- SSR-129-47-2
Highlights
- Custom Fit for Your Vehicle: Mounts to existing attachment points
- 5,000-lb Load Support: Keeps your truck level under heavy trailers or bed loads for safer control.
- Zero Maintenance Required: No air lines or pressure checks, just install and drive worry-free.
- Smoother Ride Unloaded: Two-piece design separates when empty for full suspension travel and comfort.
- Stable, Confident Handling: Progressive urethane springs absorb bumps and reduce sway on sharp turns.
- Built to Last: Microcellular urethane resists oil, salt, and UV damage from -25 F to 200 F.
Features to know about
Keep Your Ride Level and Stable: 5,000-lb Rear Suspension Support
Heavy trailers and bed loads can make the rear of your vehicle sag and your steering feel light. These SumoSprings Rebel helper springs add up to 5,000 lbs of rear axle support at 50-percent compression to keep things level and under control. The microcellular urethane design helps your factory suspension bear the weight so braking, traction, and headlight aim stay consistent when towing or hauling.
Smooth Ride On or Off the Job: Progressive Load Control
You don’t have to give up ride comfort when the load changes. The progressive springs compress easily with lighter loads for a softer ride and ramp up stiffness as weight increases—compressing by as much as 80 percent when heavily loaded. That means smooth driving when unloaded and firm, stable support when the bed is full or the trailer is hitched.
Full Suspension Travel When You’re Unloaded: 2-Piece Rebel Design
The two-piece setup connects at the top and bottom when supporting weight, then separates when you’re not loaded. This allows full suspension movement for a smoother ride on rough roads or off-pavement travel. You get the stability of heavy-duty helper springs without giving up comfort when driving empty.
Stay Steady in Crosswinds and Turns: Independent Spring Action
Each SumoSpring works on its own side to balance uneven or off-center loads and minimize body roll in corners. That independent action helps your vehicle stay planted through curves, gusty conditions, or uneven terrain so handling feels controlled and predictable.
Built Tough for Real Conditions: Maintenance-Free Urethane Construction
Made from durable microcellular urethane that resists oils, road salts, and UV rays, these springs perform in temperatures from -25 F to 200 F. They expand and compress vertically with minimal side movement, so they fit tight spaces without rubbing nearby parts. With no air lines or pressure to monitor, they’re completely maintenance-free once bolted in place with the included hardware.
Specs
Weight and Capacity
- Weight capacity (at 50-percent compression): 5,000 lbs
Warranty
- Limited lifetime warranty
- 30-Day satisfaction guarantee
SSR-129-47-2 SuperSprings Sumo Springs Rebel Rear Vehicle Suspension Kit for Trucks - 2-Piece
Installation Details 
This Product Fits The Following Vehicles
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.