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  1. Vehicle Suspension
  2. SuperSprings Intl
  3. Bump Stops
  4. Towing/Load Leveling
  5. Standard Duty
  6. Rear Axle Suspension Enhancement
THIS ITEM IS NOT A FIT FOR
2018 Ram ProMaster 2500
SuperSprings Intl

SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle

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$631.99
Retail:$752.70
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Vehicle Suspension
Not Confirmed to Fit

2018 Ram ProMaster 2500

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3,000-lb Capacity. These maintenance-free microcellular urethane springs upgrade your vehicle's rear suspension. Each 2-piece spring connects at top and bottom and provides unlimited suspension travel and movement for a smooth, comfortable ride. Great Prices for the best vehicle suspension from SuperSprings Intl. SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle part number SSR-128-40-2 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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SuperSprings Intl Vehicle Suspension

  • Bump Stops
  • Towing/Load Leveling
  • SuperSprings Intl
  • Standard Duty
  • Rear Axle Suspension Enhancement
  • Suspension Only

3,000-lb Capacity. These maintenance-free microcellular urethane springs upgrade your vehicle's rear suspension. Each 2-piece spring connects at top and bottom and provides unlimited suspension travel and movement for a smooth, comfortable ride.


Features:

  • Helper springs upgrade your vehicle's rear suspension for improved driver control and comfort
    • Keep your vehicle level when you're towing or hauling a heavy load
    • Help to absorb bumps and shocks
    • Minimize sway
  • 2-Piece design provides unlimited suspension travel and movement for a smoother ride when unloaded or on rough terrain
  • Progressive load control - springs compress according to the weight of your cargo
    • Lighter loads - springs compress easily at first for soft engagement and a less bumpy ride
    • Heavier loads - springs compress by as much as 80 percent for support
  • Springs work independently from each other to compensate for off-center loads and reduce body roll during sharp turns
  • Durable microcellular urethane
    • Works in temperatures from -25 F to 200 F
    • Resists damage caused by oils, road salts, and UV rays
  • Minimal lateral expansion - springs expand and compress vertically instead of to the sides so they aren't easily damaged when operating in tight spaces
  • Maintenance-free - no tubing to run or air pressure to monitor like with air springs
  • Easy, bolt-on installation
  • 2 Jounce-style springs and necessary hardware included
  • Made in the USA


Specs:

  • Weight capacity (at 50-percent compression): 3,000 lbs
    • SumoSprings will not increase your vehicle's weight-carrying capacity
  • Limited lifetime warranty
  • 30-Day satisfaction guarantee


Rear Suspension Support

SumoSprings helper springs are great for vans. Towing or hauling a heavy load can cause sag as your factory suspension compresses under the weight of the load. This means that the rear axle is trying to support not only the extra load but also the van's weight. And because there is less weight on your front axle, your front tires make less contact with the road, which causes problems with traction, steering, and braking. SumoSprings upgrade your factory suspension to level your vehicle, improve driving performance, and keep your ride comfortable.


SumoSprings Rebel installed showing separation of 2-piece springs

The innovative 2-piece design of these Rebel springs allows for unlimited suspension travel. This means that there will be more movement in your suspension when you're unloaded or off-roading, which makes your ride smoother and more comfortable.


Each spring has 2 pieces. One piece attaches to the frame of your vehicle. And the other piece attaches to the axle, typically above your existing factory leaf spring. The pieces come together to provide support when you are towing or hauling a heavy load. When you're unloaded, they separate so that they don't restrict the movement of your suspension. The closed-cell urethane springs also act like a shock absorber to dampen road vibration.


SumoSprings compressing under load

SumoSprings provide progressive load control - the more you load them, the stiffer they become. With a lighter load, the springs will compress easily for soft engagement and a less bumpy ride. The springs can also compress by as much as 80 percent to support a heavy rear load and to help your factory suspension bear up under the load. This evens out the weight, which levels your vehicle and ensures that your front tires are making better contact with the road. A level ride means that you have improved driving control, ensures safe headlight aim, and helps to minimize sway. The springs also support your factory suspension, which helps prevent sagging and reduces bottoming out.


The springs work independently from one another to support each side of your vehicle. This action helps to reduce body roll when you make a sharp turn. This also helps compensate for an off-center load.


Durable, Custom-Fit Springs

These microcellular urethane springs are tough. They resist abrasion, oil, salt, and UV rays that can more quickly wear out other springs, and they perform well in temperatures ranging from -25 F to 200 F (-33 C to 93 C).


SumoSprings expand and compress vertically with minimum expansion to the sides, so they won't be damaged by nearby mechanical parts, and they fit safely into tighter spots. And unlike air springs, SumoSprings require no maintenance or adjustment.


This kit comes with custom-fit brackets that are designed to easily bolt onto your vehicle.



SSR-128-40-2 SuperSprings Sumo Springs Rebel Rear Vehicle Suspension Kit for Trucks - 2-Piece

Item # SSR-128-40-2

Installation Details SSR-128-40-2 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.5

145 reviews
3,000-lb Capacity. These maintenance-free microcellular urethane springs upgrade your vehicle's rear suspension. Each 2-piece spring connects at top and bottom and provides unlimited suspension travel and movement for a smooth, comfortable ride.

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See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • Which SumoSprings Rebel Kit Fits 2025 Ford F-350 Tremor
    Hey Craig, it looks like the correct SumoSprings kit part is # SSR-128-40-2 for your 2025 Ford F-350 Tremor 4x4 but I do need you to check one thing to be totally sure. Go check out the leaf springs on the back of your truck. Make sure there isn't a 3 inch block between the overload spring and the leaf spring pack. If not present this fits. If you do have that let me know and we'll see what will work best.
    view full answer...
  • Recommended SumoSprings for 2025 Ford F-350
    Hey Michel! I also really like SumoSprings since they're easy to install, don't require maintenance, and don't ruin unloaded ride quality like some other options do. You can go with the traditional style like # SSR-127-54 as long as you don't have a 3" block between the leaf pack and top overload spring. However, with a 2,800 lb capacity I'm afraid you might be overloading them once you switch to a 5th wheel with a heavy pin weight. A better solution would be to switch to the SumoSprings...
    view full answer...
  • What Replacement Bump Stops Are Confirmed to Fit a 2024 Ford F-350 Super Duty?
    Here is a list of the bump stop replacements we have which fit your 2024 Ford F-350. If you can tell me how you plan to use your F-350 I can give you my personal recommendation for the option which works best for you. Timbren Front 2WD # TFF350SD2 4WD # TFF350SDC Timbren Rear 2WD/4WD # TFRTT350J SumoSprings Front 2WD/4WD 1,000LB # SSF-111-40 2WD/4WD 1,500LB # SSF-111-47 SumoSprings Rear 2WD/4WD 3,000LB # SSR-128-40-2 2WD/4WD 1,500LB # SSR-127-47 2WD/4WD 2,800LB # SSR-127-54 2WD/4WD...
    view full answer...
  • Comparing The Solo And Rebel SumoSprings Options For 2022 Ford F-350 Super Duty
    Between the SumoSprings Solo Custom Helper Springs # SSR-127-54 and the SumoSprings Rebel Custom Helper Springs # SSR-128-40-2, I do prefer the Rebel. The Rebel's 2 piece design allows for better compression and movement with the axle, giving you a better and more comfortable ride. The higher capacity, though pretty small, does also lend itself towards more heavy duty trucks, like your 2022 Ford F-350. This means they will suit your needs better and will be the better option. I also like...
    view full answer...
  • Comparing SumoSprings Vs Timbren For A 2022 Ford F-250 Towing A 10,000lbs 5th Wheel
    The Timbren Suspension Enhancement # TFRTT350J has a maximum capacity of 8,000lbs and installs directly to your frame with no drilling required. Whereas, the SumoSprings Rebel # SSR-128-40-2 have a maximum capacity of 3,000lbs at 50 percent compression. In your application I recommend the Timbren Suspension Enhancement # TFRTT350J for its higher payload capacity since you mentioned you were going to be towing a heavier 5th wheel at 10,000lbs. However, it is possible that you may have a...
    view full answer...
  • Timbren vs SumoSprings for 5th Wheel Towing with a 2022 Ford F-350 Super Duty 4x4
    I definitely understand the confusion, as both kits look similar. The kit I recommend for your 2022 Ford F-350 4x4 though is the Rebel kit from SumoSprings: - SumoSprings Rebel Custom Helper Springs # SSR-128-40-2 The reason I like this over the Timbrens is because the Timbren springs tend to be less forgiving. While that initially sounds like a good thing for heavy duty towing, it also means you're going to feel it when you aren't towing. SumoSprings has done an excellent job at combining...
    view full answer...
  • Recommended SumoSprings For 2021 Ford F-250 FX4 Towing 14000lb 5th Wheel Trailer
    For your 2021 Ford F-250 FX4 Crew Cab Short Bed with the 6.7L Turbo Diesel towing a 5th wheel weighing 14000lbs I recommend going with the SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle # SSR-128-40-2 you were looking at. The reason for this is they have a 3000lb rating which will be perfect for the pin weight of your trailer without being overly stiff, and will be a great maintenance free rear suspension enhancement option that is easy to install while being compatible...
    view full answer...
  • Comparing StableLoad and SumoSprings for a 2021 Ford F-250
    The TorkLift StableLoad Suspension Upgrade part # TLA7310S and SumoSprings Rebel Custom Helper Springs part # SSR-128-40-2 are both great options for a 2021 Ford F-250 that will help to reduce sag/squat while towing or hauling. They will both work together but that might be a bit overkill so I would just pick one, the SumoSprings are my recommendation.
    view full answer...
  • SumoSPring Recommendation for my 2020 Ford F-350 Dually without Jounce Bumper Stops
    I have two good options for your 2020 Ford F-350 Dually that does not have the jounce bumper stops present. The SumoSprings Solo Custom Helper Springs part # SSR-127-47 are designed to give 1,500 lbs. of load leveling support and the SumoSprings Solo Custom Helper Springs part # SSR-127-54 are designed to give 2,800 lbs. of load leveling support. These have a one piece design and have spacers that will allow you to take up the gap between where the jounce bumper is on most vehicles and...
    view full answer...
  • Recommended Helper Springs For 2022 Ford F-250 Super Duty 4X4 Short Bed
    I recommend the SumoSprings Rebel Custom Helper Springs # SSR-128-40-2 for your 2022 Ford F-250 Super Duty 4X4 short bed. These springs are progressive so when you are driving with no weight or little weight it will not act harshly like some of the other heavier rated springs. As weight is added to the suspension the springs will compress adding additional support to your suspension helping to keep your F-250 level and provide you with a stable ride. The springs will also help cushion additional...
    view full answer...
  • Can RoadActive Suspension Be Used on a 2019 Ford F-350 With Top Overload Springs?
    Due to the design of the RoadActive Suspension # RAS3611-SLHD you would have to remove the upper overload spring on your 2019 Ford F-350 to use their system. As an alternative if you wish to keep the top overload spring this will depend on if you have the 3" block between the leaf spring and the top overload spring. If you do have this block you will want to look at the SuperSprings SuperSway Stops # SS65GR. Otherwise the SumoSprings Rebel Custom Helper Springs # SSR-128-40-2 would be a...
    view full answer...
  • Best Suspension Enhancement for 2019 Ford F-350 that Won't be Too Harsh Unloaded
    For what you are looking for the best option is the SumoSprings part # SSR-128-40-2 for if you have a 2 wheel drive 2019 Ford F-350 part # SSR-129-40-2 for if you have a four wheel drive truck. This is the perfect blend of support and comfort that will be just what you are looking for. The Timbrens do have a reputation for being a bit harsh too so you'd really not like the unloaded ride quality if you went that route.
    view full answer...
  • What Sumo Spring Should I Install On My 2015 Ford F-250 Super Duty
    When installing Sumo Springs on your 2015 Ford F-250 Super Duty I Recommend The SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-114-47. The Sumo Springs have a 1,500 pound capacity. The helper springs keep your vehicle level when you're towing or hauling a heavy load, help to absorb bumps and shocks, and minimize sway. It has a simple, no drill installation. I have attached a review video link below.
    view full answer...
  • Weight Capacity of SumoSprings Kit # SSR-128-40-2
    The weight capacity of the SumoSprings part # SSR-128-40-2 that you referenced is 3,000 lbs currently as it was recently uprated. Thank you for bringing that to our attention we'll get that updated ASAP. What's worth noting is that this kit will provide your factory suspension with 3,000 lbs more support to help it carry it's current weight capacity as safely as possible but does not give you additional capacity beyond what the truck is rated for.
    view full answer...
  • Which SumoSprings Rebel Fits 2018 Ford F-250 4x4
    For your 2018 Ford F-250 4x4 the correct SumoSprings Rebel is the part # SSR-128-40-2 and not the other one you mentioned. The 4x4 and 4x2 models of your truck have slightly different suspension setups which is why there is a different fit created for both versions.
    view full answer...

Do you have a question about this Vehicle Suspension?


Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Jonathan Y
Video Edited:
Jonathan Y
Employee Mary K
Written by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Alex H
Updated by:
Alex H
Employee Noah M
Updated by:
Noah M
Employee David F
Installed by:
David F

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