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  1. Vehicle Suspension
  2. SuperSprings Intl
  3. Bump Stops
  4. Towing/Load Leveling
  5. Light Duty
  6. Rear Axle Suspension Enhancement
SumoSprings Solo Custom Helper Springs - Rear Axle
SuperSprings Intl

SumoSprings Solo Custom Helper Springs - Rear Axle

Part Number: SSR-312-47
In Stock
$372.99
Retail:$419.53
You Save: $46.54
Vehicle Suspension

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1,500-lb Capacity. Upgrade your vehicle's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation. Great Prices for the best vehicle suspension from SuperSprings Intl. SumoSprings Solo Custom Helper Springs - Rear Axle part number SSR-312-47 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-312-47

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

1,500-lb Capacity. Upgrade your vehicle's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation.


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
  • 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 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
  • Simple, no-drill installation
  • 2 Jounce-style springs included
  • Made in the USA


Specs:

  • Weight capacity (at 50-percent compression): 1,500 lbs
    • SumoSprings will not increase your vehicle's weight-carrying capacity
  • Limited lifetime warranty
  • 30-Day satisfaction guarantee


Rear Suspension Support

Towing or hauling a heavy load can cause rear 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 weight of your vehicle. 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 vehicle's factory suspension to level your vehicle, improve driving performance, and keep your ride comfortable.


Installed spring when it is not compressed

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 closed-cell urethane material allows for smooth contact between the springs and your vehicle. And the springs act like a shock absorber to dampen road vibration.


Installed spring when it is compressed

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 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.


The helper springs are custom designed to fit your vehicle, and they install easily - no drilling required.



SSR-312-47 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Trucks

Installation Details SSR-312-47 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

2118 reviews
5 Stars
(1708)
4 Stars
(285)
3 Stars
(45)
2 Stars
(29)
1 Star
(51)
1,500-lb Capacity. Upgrade your vehicle's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation.

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See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • Comparing Timbren and SumoSprings Suspension Enhancement For 2022 Ram 2500
    The SumoSprings are definitely the best choice for your 2022 Ram 2500. The Timbren will give you a rough ride when unloaded while SumoSprings have a minimal impact on unloaded ride quality. Also, the # TDRTT3500E is a severe service kit. The only reason to add this would be if you're using a slide-in camper or salt spreader. The correct SumoSprings kit will depend on your application. I would choose the option with the lowest capacity that fits your needs. We have the following available: -SumoSprings...
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  • Are Air Bag Helper Springs Or SumoSprings a Better Option For a 2022 Ram 2500?
    The main benefit of the Firestone Ride-Rite Air Helper Springs # F2598 is you can easily adjust the air pressure in the springs using a Compressor System # AL74000 to not only level your 2022 Ram 2500 but also dial in the ride quality. With the SumoSprings you have several options with different weight ratings. 1,500LB # SSR-312-47 2,800LB # SSR-312-54 3,000LB # SS64VR 5,000LB # SS27GR The heavier capacity will cause your rear end to sag less but do understand the higher capacity will...
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  • SumoSprings Helper Springs Comparison For the Rear Suspension On a 2022 Ram 2500
    There are going to be three of the SumoSprings helper springs available for your 2022 Ram 2500. SumoSprings Rebel # SS27GR SumoSprings Solo Yellow # SSR-312-54 SumoSprings Solo Black # SSR-312-47 The Rebel springs will have the highest weight capacity at 5,000lbs. These are going to be best for trucks that are constantly under load. So if you have a trailer that you are always connected to, large tool box or slide in camper these will be your best choice. The Solo Yellow is rated for...
    view full answer...
  • Can You Remove Spacer on SumoSprings Solo Custom Helper Springs for a 2021 Ram 2500
    Yes, you can omit the spacer included with the SumoSprings Solo Custom Helper Springs part # SSR-312-54 which will allow the suspension to compress more before the springs engage. If you're looking for a smoother ride you can also switch to a softer spring like the SumoSprings Solo Custom Helper Springs part # SSR-312-47 which are rated at 1,500 lbs.
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  • Best Suspension Enhancement for 2016 Ram 2500 Towing Fifth Wheel With 1,600 Pound Tongue Weight
    For your 2016 Ram 2500 I recommend the SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-312-54. The SumoSprings are a great choice to help with a bouncy ride. These springs minimize sway, cushion bumps and shocks, and also have a minimal impact when you aren't towing so you don't experience a stiff ride without your fifth wheel. With a tongue weight of 1,600 lbs I recommend the springs with a weight capacity of 2,800 lbs. There should be no need for air bags, and unlike air bags...
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  • Rear SumoSprings Suspension Enhancement Recommendation for 2018 Ram 2500
    SumoSprings does make rear suspension enhancement that fits your 2018 Ram 2500 Powerwagon but it's not the setup you mentioned. Instead for your vehicle they recommend the have the Solo Spring part # SSR-312-47 which replaces the bump stop on your truck and gives you a jounce spring style kit that gives an additional 1,500 lbs of suspension support. I attached a picture of how it installs and you can see that it sits right by the rear suspension coil. I also attached an install video...
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    Image 1 for
  • Black SumoSprings for a 2021 Ram 2500
    I would be happy to help you find a pair of SumoSprings for your 2021 Ram 2500.I recommend the SumoSprings Solo Custom Helper Springs - Rear Axle item # SSR-312-47. These 1,500-lb capacity springs allow you to upgrade your Ram 2500's rear suspension. The sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. They also have a no-drill installation. I have attached a photo of them installed to also demonstrate that they come...
    view full answer...
    Image 1 for
  • Suspension Enhancement Recommendation 2021 Ram 2500 That Won't Hurt Ride Quality
    The best suspension enhancement kit we offer for your 2021 Ram 2500 that will reduce sag and not negatively affect ride quality is the SumoSprings kit part # SSR-312-47 as it is known to be less harsh than other options and still provides the support you are wanting.
    view full answer...
  • Rear SumoSprings Custom Helper Springs For a 2021 Ram 2500 Availability In Black
    First the suspension enhancement systems will not increase your payload it only assists the stock suspension to absorb road shock and maintain a more level ride when hauling additional loads. The SumoSprings Solo Custom Helper Springs # SSR-312-47 are similar to the # SSR-312-54 in design. The # SSR-312-47 springs are black and have a 1,500lb capacity at 50% compression. While the yellow # SSR-312-54 have a weight capacity of 2,800lbs at 50% compression. A heavier duty option is the...
    view full answer...
  • Can Spacers be Used on SumoSprings on 2019 Ram 2500
    Assuming the SumoSprings will fit they would be a great choice for additional support. In order to figure out if the SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-312-47 will fit your 2019 Ram 2500 I recommend measuring the distance where they would install.. These come with a spacer but there are no additional spacers that can be used. When fully installed using the included 1/2" spacer these will be 6" tall. Ideally you want about a 1/4-1/2" gap, no more than 1". So if you...
    view full answer...
  • Recommend SumoSprings Black For For A 2022 Ram 2500
    When installing SumoSprings on your 2022 Ram 2500 I recommend The SumoSprings Solo Custom Helper Springs-Rear Axle Black # SSR-312-47 which are black. These springs have a 1,500 pound axle capacity and will allow you to upgrade your Ram 2500's rear suspension. The springs are made out of a microcellular urethane and have chushioned bumps that help support heavy loads to help level your ride and minimize sway. I linked an installation video below of the SumoSprings being installed onto...
    view full answer...
  • Should I Use Timbrens or SumoSprings to Prevent Sag on My 2022 Ram 2500 4x4?
    Both the SumoSprings # SSR-312-47 and Timbren # TDF25004B for the rear axle of your 2022 Ram 2500 are jounce-style springs, but they do differ quite a bit as to the type of support they actually provide. If the bed on your Ram is pretty consistently loaded then the Timbren Rear Suspension System # TDF25004B will be the better option, as these springs are made up of a more robust Aeon rubber and consequently feature a much higher weight capacity of 6,000 pounds. They will do a better job...
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  • Do SumoSprings Touch the Axles on a 2014 Ram 2500
    The SumoSprings # SSR-312-47 will be touching your axle when the trucks suspension is relaxed. These are much softer than Timbrens so you may not notice much of a difference in ride quality from factory. The SumoSprings will provide support in the rear and when cornering when towing your camper.
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  • SumoSprings that Fit 2020 Ram Power Wagon
    Yes the SumoSprings part # SSR-312-47 are a confirmed fit for your 2020 Ram Power Wagon.
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  • Will SumoSprings Solo Custom Helper Springs Fit 2017 Ram 2500 with Factory Air Bag Suspension
    I reached out to my contact at SuperSprings and he said that the SumoSprings Solo Custom Helper Springs # SSR-312-47 are perfectly compatible with the factory air bag setup on your 2017 Ram 2500. The jounce-style springs won't interfere at all with the air bags, which as you mentioned simply take the place of the standard coil springs. For the front axle on your Ram you will need the Solo Custom Helper Springs # SSF-302-47, which feature a 1,200 pound weight capacity (the lowest available)....
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  • Suspension Enhancement Recommendation for 2021 Ram 2500 Towing Trailer
    The best suspension enhancement for your 2021 Ram 2500 4WD to give you additional support while also preventing the bounce you are mentioning is the SumoSprings part # SSR-312-47 which has a great balance of support without being too harsh. Newer trucks do end up harsher as they are all trying to out do each other with higher towing capacities which ends up turning into stiffer springs and harsher ride quality.
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  • Gooseneck Hitch and Suspension Enhancement for 2020 Ram 2500
    You'll need a gooseneck hitch installed in your 2020 Ram 2500 like the B and W Turnoverball gooseneck part # BWGNRK1320 for your Andersen Ultimate to connect to. Then for rear suspension that won't ruin your ride quality the SumoSprings part # SSR-312-47 would be your best option. Most other options have a reputation for hurting the ride quality whereas this won't be nearly as rough.
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  • Will SumoSprings Solo Custom Helper Springs Soften the Ride In a 2016 Ram 2500
    In order to help you smooth out the ride on your 2016 Ram 2500 I would need some more info from you. For starters, are you using the factory jounce springs? Regardless of which jounce springs you are using, are they engaged/compressed while unloaded? If the jounce springs are engaged/compressed while unloaded then there is a possibility that the SumoSprings Solo Custom Helper Springs part # SSR-312-54 would improve ride quality although if ride quality is your utmost concern then I would...
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  • How To Eliminate Sway On a 2018 Ram 2500 With Truck Bed Camper
    The most beneficial component that you can add/upgrade to help eliminate sway is an anti-sway bar, the Roadmaster Rear Anti-Sway Bar part # RM-1129-135 in particular. The Roadmaster Rear Anti-Sway Bar will replace your factory sway bar and because it has a larger overall diameter will do a better job of helping to limit the sway you are experiencing with your truck bed camper at highway speed. The Roadmaster Rear Anti-Sway Bar also comes with polyurethane bushings that are more durable...
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  • Recommended Suspension Enhancements for 2019 Ram 2500 with Factory Air Suspension
    The only type of suspension enhancement system we have that will work with the factory air suspension on a 2019 Ram 2500 are upgraded jounce bumpers, the SumoSprings Solo Custom Helper Springs part # SSR-312-47 are what I recommend. The SumoSpring are super easy to install and they will provide great support without sacrificing too much ride quality.
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  • Suspension Enhancement For 2017 Dodge Ram Power Wagon
    The SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-312-47 are a confirmed fit for the 2017 Ram 4x4 like your Power Wagon model. There is no need for a spacer unless you have lifted your truck at the suspension. These springs have progressive load control and compress according to the weight of your cargo with a capacity of 1500 lbs. This will assist your current suspension and the installation is easy with no drilling required.
    view full answer...
  • Will SumoSprings Work with Weight Distribution Systems
    Hey Brian, weight distribution systems can be used with SumoSprings kits like the part # SSR-312-47 and the two kits will work great together. You will most likely need to set up the spring bar tension again though as with the additional support you won't need to have the bars as tight.
    view full answer...
  • Rear Suspension Enhancement for a 2017 Ram 2500 2-Wheel Drive
    The Timbren springs are going to give your 2017 Ram 2500 a stiffer ride when the truck is empty/not towing. For similar springs that have more give thus providing a smoother ride over the alternative I recommend SumoSprings # SSR-312-47. The best option is to use air bags # F2706 (as long as your truck does NOT have the factory air suspension system). Air bags allow you to adjust the stiffness by adding or removing air from the air bags. I have linked a video showing an example installation...
    view full answer...
  • Best SumoSprings Kit for Towing a 5th Wheel with a 2020 Ram 2500
    Hey Joe, thanks for reaching out! The only real difference (aside from color) for the SumoSprings Kit # SSR-312-47 and Kit # SSR-312-54 is that the former is rated to help with 1,500 lbs while the latter is rated to help with 2,800 lbs. The 1,500 lb kit will work just fine if your hitch (pin) weight doesn't go over 1,280 lbs, but in your case it wouldn't hurt to get the 2,800 lb kit because that will also help alleviate any sag if you load some cargo up in the bed to haul. Since the SumoSprings...
    view full answer...


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Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Andrew K
Video by:
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Employee Michael B
Video by:
Michael B
Employee John S
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Employee Jeff D
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Jeff D
Employee Robert C
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Employee Aidan B
Installed by:
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Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
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Dustin K
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Employee Mary K
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