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SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle
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SuperSprings Intl

SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle

Part Number: SSR-301-47-2
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5,000-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-301-47-2 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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SuperSprings Intl Vehicle Suspension - SSR-301-47-2

  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • SuperSprings Intl
  • Heavy Duty

5,000-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): 5,000 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 pickup trucks. 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 truck'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-301-47-2 SuperSprings Sumo Springs Rebel Rear Vehicle Suspension Kit for Trucks - 2-Piece

Installation Details SSR-301-47-2 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle - SSR-301-47-2

Average Customer Rating:  4.8 out of 5 stars   (563 Customer Reviews)

5,000-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.

by:
Dodge Ram Pickup

I like the Sumo Srings on my Ram thirty five hundred thinking about a pair for my fifth wheel trailer.



by:
Dodge Ram Pickup

We have a Ram 3500, carrying a 5000 lb (plus), extremely tall truck camper. The floor sits ABOVE the side rails of the truck bed. I came to the RV dealer, and of course, they would not let me have it till they inspected the truck. It HAD to be a dually to handle street corners. The inspector saw the air bags that the truck dealer had installed and commented that "You will be a lot better off when you buy some Sumo Springs. After one trip cross country, I ordered Sumo Springs, and have not regretted it since. Stabilizes this super high load on corners, cross winds, and general driving. At night, truckers no longer flash their headlights at us. This is the way to go.



by:

Swapped out a set of air bags for a pair of Sumo Springs. The truck now self-levels when I load my slide in camper or other heavy loads. Truck handles better as it's not floating on two balloons. More stability in turns and cross winds.



by:
2020 Ram 3500

Product bolted up as designed. An empty truck ride quality did not change. A loaded truck ride was good and could tell the extra stability they provided.



by:

Easy install. Took me like 30 mins to install. Haven't towed yet...but looking forward to the improvement



by:
2019 Ram 3500



by:

Front and rear Sumo Springs installed. Have not had a chance to hit the highway as yet. Locally a very good ride. Thanks to Joanne K. for all of her help.



by:

I installed these front Sumos on my 2023 Ford F53 chassis Class A Tiffin for several reasons. The factory bump stops had fallen out so something needed to be installed. I decided to invest in the Sumos to provide suspension support and get all the benefits of Sumos. I installed them, test drove the coach and am pleased with the results. They help cushion the front end and provide anti roll assistance. They work well with the Konis to soften the natural harshness of leaf springs. I’m very pleased with this addition.



by:

I put a small leveling kit in my 2500hd Silverado. I noticed afterwards towing my excavator or dump trailer I was getting some rear sag when I had my trailers loaded heavy. I considered doing air bags for the rear. Instead I installed the sumo springs. I installed them in about an hour. Very happy with them. No noticeable difference in ride quality while empty. And they keep my truck level when I’m hauling my trailers. 5 stars!



by:

Installation hardware did no work for my F53 chassis



by:

These springs made a big difference in the handling of my Newmar Baystar 31' motorhome. Much improved ride compared to the factory suspension.



by:

I put front sumos on my 35’ class A MH in 23. (22k F53 chassis). I noticed reduced front sway and better tracking. Especially improved when semis pass. I then put rear sumos on along with a 1-3/4 sway bar on the rear this year,24. Improved handling and ride all around. Nothing more to do. All for under $[XX].



by:

Upon arrival I noted the Sumo Springs parts were well made and came with excellent installation instructions. I'm installing the springs to mitigate rear squatting of my 2015 GMC 2500HD 4x4 Danali when pulling our 5th Wheel Camper.
During installation two issues were identified.
1) the (2) top plates required some rehemming as the (2) center holes on each plate would not line up with top spring mounting plate holes allowing easy bolt up.
2) recommend manufacturer look at the passenger side rear bottom plate J-hook location as it interferes with the emergency brake cable bracket mounting bolt location and barely clears rear shock absorber.
Bottom line, regardless of good installation instructions be prepared to use your mechanical skills to complete job.



by:

Installed front first and then took a trip on a curvy mountain road. I found they made a significant change in the ride and the sway. Very good update to a 2019 Ford F53 25000 chasis.



by:

I haven't had the springs under load, yet. I'm sure they'll perform as expected. I was not able to adjust the driver's side springs so that they align correctly. (see pic). The bottom spring does go into the top spring, but it's off enough that over time it will be an issue. Passenger side is spot-on! I have a 2024 F350 Tremor



by:

The product did a good job in reducing body roll in the 2025 Winnebago View 24t. The instructions were less than helpful - they need to be rewritten for better clarity, orientation, and specificity for the Mercedes 2023 Sprinter 3500 XD AWD. I had considered Timberens, but I think these will do a better job in the long run.

I replaced both the front and rear helper springs. The tolerances on the front were really tight - doable but really tight. Don't have any suggestions for getting the springs bolted on other than to be patient, it's a tight fit and smaller hands would have helped, but no such luck - it just took patience. No big surprises, basically remove and replace - just be cautious on raising and lowering the front end. Wheel blocks and frame supports are mandatory for safety.

As far as the rear helper springs, the designers planned for the potential rerouting of lines on the left side of the coach quite nicely. Takes some time, DON'T lock tite anything until installation is complete, run around the block a couple of times, and readjusted for fit. The factory frame bumpers can be removed very easily with a pair of channel locks, rather than messing around with screwdrivers and prybars. Takes all of two seconds and the bumpers were removed without damaging the bracket.

Communications with etrailer were great, probably overthought the project a bit but the representatives were great in keeping my thoughts corralled. The installation took longer than I expected but it was great fun, so who really minds additional time to do the job right.



by:

I have a 28-foot-long class A motorhome on a Ford F53 Chassis. The handling of the vehicle at any speed above 50 mph is terrible. The vehicle wanders all over; very difficult to keep the vehicle between the lane marker lines. The SumoSprings, installed front and rear, did not solve this problem. Money would have been better spent elsewhere!



by:

they were a great investment for our motorhome. Swaying now is very little and it has to be very windy for me to notice. I will never own another motorhome without sumo springs. I have a forest river fr3 30ds 2021. Easy to install yourself.



by:

We have a 2009 build F53 chassis on our 2010 Windsport 32A. I ordered these Sumo springs for the front axle. Hated how bad our coach dashboard would shake and rattle when going over bridge transitions, potholes, and concrete roadway section breaks. Took about an hour and were easy to install alone. Couldn't believe how much these helped the front axle. Worked so well I recently bought a set for the rear axle also. Those are a bit harder to install due to having to drill holes in frame rails to mount the upper bracket and glad I had friend to assist me. Would have only taken a little longer without the help but still easy to do by basic mechanic skills. With having both now we can certainly tell the difference and wished I had bought them sooner.



by:

The Sumo mount had to be slightly modified on the drivers side (removed a 1/2" by 1/2" chunk of the plate) with a grinder to get it to fit on my 2022 f350 4x4. I contacted the manufacturer prior to making the modification. They did not have an issue. The Sumo reduced truck squat (approx 3/4") allowing the truck to ride level with a trailer (8k hitch mount and 17k gooseneck). When you hit a pothole, the impact felt in the truck was jarring and caused the truck to become unstable. The Sumo eliminated this problem. I chose the blue over the yellow after watching a video on etrailer about ride comfort. I added front Sumos after I installed the rear Sumos. The rear provided the a more noticeable improvement. I chose Sumos over air bags because they eliminated air leak maintenance and air pressure adjustments depending on the load.



by:

The work great! Was going to go with the Air-Ride air bags in the front but folks had noted that the bags are strained when the leveling pulls the front wheels up to the point of coming off the ground. Glad we went with these. The person I put this on for is Handicap (or Handicapable as she says!) and these do not require air or making sure the pressure(s) are correct and holding.
It was a pain in the butttt get the original jounce bumper off the drivers side, but we muscled through it!! Thanks, Amy, for your help in ordering!! v



by:

These helper springs made an amazing difference in the stability and ride comfort in our coach. Improved cornering and bounce control were immediately apparent. Plus, crosswind driving is much improved. The split design makes leveling easy as I typically raise the front of the coach rather than the rear. Installation is a lot of work, but can be done yourself with the right equipment. Very pleased.



by:

The front Sumo Springs made a major difference in the stability of my Winnebago motorhome. It handles the bumps much better without major jarring of the passengers and dampens the side to side motion in turns and under crosswinds.



by:

Love these. Were easy to install and work great. No complaints. Maintains ride height even with 10,000lbs on the trailer. “F-250 with gooseneck” for reference.



by:

Definitely helped keep my RV more stable on the uneven secondary roads and the push from big rigs as they pass by


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Show More Reviews

See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • Sumo Springs For 2022 Ram 3500 With 2,400 lb Slide In Camper
    Hello Brennan. The only real difference between the different sumo spring options is the weight capacity or stiffness of the springs. Since you will have a truck bed camper on your 2022 Ram 2500, I recommend going with the 5,000 lb capacity SumoSprings Rebel Custom Helper Springs # SSR-301-47-2. The lower capacity springs are great for occasional towing, but for a constant load like a truck bed camper, you are definitely going to want the extra support provided by the 5,000 lb springs....
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  • Compatible Suspension Enhancement For A 2009 Dodge Ram 2500 4x4 With 2 Leveling Kit
    The SumoSprings Rebel Custom Helper Springs # SSR-301-47-2 are a confirmed fit for the rear axle of your 2009 Dodge Ram 2500 4x4 Pickup. The SumoSprings Solo Custom Helper Springs # SSF-302-47 unfortunately will not accommodate a spacer but you can instead use the RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3613-HD. These will attach to the leaf spring instead so you won't have to worry about spacer compatibility. Note: The # RAS3613-HD do not fit vehicles with factory...
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  • Best SumoSprings For 2021 Ram 3500 Towing 5th Wheel Trailer
    Sag is a pretty common problem for trucks towing a 5th wheel trailer, so SumoSprings are a smart idea, and the best option for your 2021 Ram 3500 are the following: - SumoSprings Rebel Custom Helper Springs # SSR-301-47-2 The SumoSprings # SSR-301-47-2 have a 5,000 lb capacity to give your '21 Ram the support it needs when towing. These are going to engage only when you are towing (or otherwise have a heavy load in your Ram's truck bed) so your unloaded ride won't be affected. But when...
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  • Will SumoSprings Rebel Helper Springs and TorkLift StableLoad Kit Help With Sag on 2022 Ram 3500
    Since the SumoSprings Rebel Helper Springs and TorkLift StableLoad Kit install in different locations on your 2022 Ram 3500 you can definitely use both at the same time to help out with any sag you might experience under a load. I recommend using the 5K Rebel Helper Springs # SSR-301-47-2 and then you can use the standard StableLoad # TLA7310 or the Stainless Steel StableLoad # TLA7310S. Please note that the StableLoad won't fit if you have the Regular Cab or factory installed airbags. The...
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  • Comparing Timbren Rear Suspension Enhancement System for 2016 Ram 3500 Towing 5th Wheel
    I understand the confusion based on the difference in capacity. The key is the difference in design. The Timbren Rear Suspension Enhancement System # T94VR is designated as a Severe Service kit so the springs are always engaged. Although the capacity is slightly lower at 8,000 lbs, the design is intended for a constant heavy load like a salt spreader or in-bed camper. Based on the frequency of your towing you want the Timbren Rear Suspension Enhancement System # TDR3500CA. These have...
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  • Will SumoSprings Help Minimize Sag With A 2022 Ram 3500 Towing A 5th Wheel Trailer
    Yes, the SumoSprings Rebel Custom Helper Springs # SSR-301-47-2 you referenced will fit and also help with the sagging you've been experiencing while towing your fifth wheel. These springs offer progressive load control so that you won't have a stiff ride when you aren't towing the trailer like you might experience if you used a Timbren instead. There's no drilling required and the installation is super easy. If you plan to do this yourself be sure to drop the spare tire to give yourself...
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  • Recommended Rear Axle Suspension Kit for 2018 Ram 3500 DRW with 5000-lb Truck Bed Camper
    If you want a rear-axle suspension support kit for your 2018 Ram 3500 dually to help with sag from your 5000-lb truck bed camper, but you do not want an adjustable air bag kit, then I suggest the Super Springs jounce spring kit # SSR-301-47-2. These jounce springs are rated for 4600-lbs, closer to the camper's weight, and like the leaf spring kit it installs without any drilling. These springs will both provide leveling under load and absorption of road shock. Progressive resistance means...
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  • Which SumoSprings Kit for 2016 Ram 3500 Towing 5th Wheel Camper with Suspension Sag
    I'd go with the lighter duty SumoSprings part # SSR-312-54 if you ever plan to drive the truck without your trailer connected as the ride quality would be much nicer than the higher rated # SSR-301-47-2 that you mentioned.
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  • Suspension Enhancement for 2020 Ram 3500 That Won't be Too Harsh
    For your 2020 Ram 3500 the suspension enhancement kit we offer that provides the best blend of support and ride quality is the SumoSprings # SSR-301-47-2. The Timbrens do a great job reducing sag but they have a reputation as being a bit harsh whereas the SumoSprings are known to be much softer. Now will your ride quality overall get smoother? Since the truck is a 3500 the answer is no, the 1 ton trucks are harsher since they are designed for towing that much weight and there isn't a way...
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  • SumoSprings Rebel SSR-301-47-2 Appears Mis-Aligned When Installed on 2018 Ram 3500
    Actually, the installation you show in your photos is exactly how it's supposed to be. I checked in with one the engineering folks at SuperSprings who manufacture the # SSR-301-47-2 Rebel Sumo Springs you installed. I forwarded them your photo, and they replied stating that what's shown in your photo is typical of Ram one ton and leaf sprung ¾ ton installs. Rams design of angling forward their rear leaf stacks/ubolts determines the final look of this kit. Their reason for this angling is...
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    Image 1 for
  • Will SumoSprings Rebel Helper Springs And TorkLift Stable Load Kit Prevent Sag Of 2020 Ram 3500
    You have a pretty good plan of what you will need to support the suspension of your 2020 Ram 3500 SRW 4x4 Long Bed when carrying your truck bed camper and towing a 10000lb trailer. The SumoSprings Rebel Custom Helper Springs - 2 Piece # SSR-301-47-2 are a great choice as they offer up to 4600lb of support when needed and will not negatively effect your unloaded ride. Adding the TorkLift StableLoad Suspension Upgrade w Quick-Disconnect - Lower Overload Springs - Stainless Steel # TLA7310S...
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  • What SumoSprings will Prevent Sag on My 2022 Ram 3500?
    If you are considering the SumoSprings Rebel Springs # SSR-301-47-2 and the TorkLift StableLoad Suspension Upgrade w Quick-Disconnect # TLA7310S for your 2022 Ram 3500, I recommend going with the SumoSprings. The SumoSprings adjust expand and compress vertically instead of to the sides in order to fully address the sagging issue. The TorkLift suspension, on the other hand, is more of an accessory that is ideal for side-to-side swaying/movement. The SumoSprings are 100% made in the U.S.A....
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  • Would SumoSprings Improve the Ride Comfort of a 2017 Ram 3500 Pulling a Horse Trailer?
    Thanks for the picture! I do believe the SumoSprings Rebel Custom Helper Springs item # SSR-301-47-2 you were looking at will significantly improve the ride comfort of your 2017 Ram 3500. These springs have a two piece design that do not come in contact until weight is put on the rear of your truck. The 5,000 lbs capacity will absorb bumps and road shock while also minimizing sway. This will make for a more comfortable travel experience for you and your horses. Another issue I noticed...
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    Image 1 for
  • Will Using The SumoSprings Rebel And TorkLift StableLoad Kits Prevent Sag On A 2022 Ram 3500?
    If the rear of your 2022 Ram 3500 is sagging while towing your 5th wheel, supplementing the rear suspension will definitely help. The TorkLift StableLoad # TLA7310 will improve handling by pre-activating your vehicle's factory lower overload springs and helps to evenly distribute weight. The SumoSprings Rebel Helper Springs # SSR-301-47-2 will further this support and will offer 5,000 pounds of supporting capacity when they are compressed to 50%. With that being said, this will be more...
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  • Will Custom Helper Springs Kit Work On 2004 Dodge 2500
    The SumoSprings Rebel Custom Helper Springs - 2 Piece - Rear Axle # SSR-301-47-2 you referenced will work on your 2004 Dodge 2500 pickup. It prevents sagging and reduces bottoming out as a result of carrying heavy loads, like when towing your fifth wheel. It also helps with problems such as off-center loads, body roll, and sway when turning sharp corners because each spring works independently. This product bolts onto your frame and rear axle and requires no maintenance. It provides a...
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  • Cost-Effective Way to Tow 5th Wheel With a 2016 Ram 3500 Short Bed Pickup
    After installing the B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1314 on your 2016 Ram 3500 I recommend using the Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter w/ Offset # CAB-C5GX1216. This installs directly on your pin box, has an offset of 7-1/2", and will be more cost-effective than the Anderson gooseneck adapter. For a cost-effective suspension enhancement I recommend the SumoSprings Rebel Custom Helper Springs # SSR-301-47-2. This will give you the support...
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  • Will SumoSprings Help 2024 Ram 3500 With Squat When Towing 5th Wheel
    Hi Mike; appreciate the question and for your 2024 Ram 3500, I absolutely recommend going with the SumoSprings. The factory air suspension is fine, but SumoSprings are specifically designed for your application, to level the load and help prevent squatting. Since you mentioned having a large 5th wheel, I recommend the 5k option: - SumoSprings Rebel Custom Helper Springs # SSR-301-47-2 These will take the brunt of the weight put on your Ram's rear suspension to counteract sag when you're...
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Info for this part was:

Employee Tricia G
Written by:
Tricia G
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Mary K
Updated 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
Employee Andy C
Installed by:
Andy C

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