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  1. Vehicle Suspension
  2. SuperSprings Intl
  3. Jounce-Style Springs
  4. Rear Axle Suspension Enhancement
  5. Light Duty
SumoSprings Solo Custom Helper Springs - Rear Axle
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SuperSprings Intl

SumoSprings Solo Custom Helper Springs - Rear Axle

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$331.99
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-307-47 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (2542)
  • Q & A (0)
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SuperSprings Intl Vehicle Suspension

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

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-307-47 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Trucks

Item # SSR-307-47

Installation Details SSR-307-47 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

SumoSprings Solo Custom Helper Springs - Rear Axle - SSR-307-47

Average Customer Rating:  4.7 out of 5 stars   (2539 Customer Reviews)

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.

by:

Super fast shipping, easy to install, product works as advertised.



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Easy to install. Nice functionally upgrade. Happy with product. Let’s see how long will last.



by:

Super easy install. I used my auto-leveling to lift front wheels to make room - you will need to take weight off of the axle to make room to install. Smoothed out the ride and body roll. Installed front and back Sumo's on my 2020 Jayco Redhawk 29 in about an hour.



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Installed on my 2020 Jayco Redhawk 29XK. Easy install. Front and back took about an hour. Worth it! Initial feel is the ride is smoother, haven't gotten out on a longer road trip - I will update when I do. Just the fact the Sumos make continuous contact with the axle where the OEM jounce bumper was there only when the suspension bottomed out means it should have a smoother ride



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See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • Recommended Suspension Enhancement System for a 2017 Ram 1500
    For your 2017 Ram 1500, I recommend using the Timbren Rear Suspension Enhancement System part # TDR1500DQ. The newer Ram trucks have coil springs in the rear as opposed to the standard leaf spring setup. The coil springs are great for handling and ride comfort but not the best for towing as they have a tendency to sag. The Timbren Rear Suspension Enhancement System will do an excellent job of taking some the rear end sag out of your Ram while towing. The best thing about the springs besides...
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  • Timbrens Vs SumoSprings for a 2017 Ram 1500
    If you were to place 1,500 lbs into the bed of your 2017 Ram 1500, you would experience less squat using the Timbren Rear Suspension Enhancement System part # TDR1500DQ than the SumoSprings Solo Custom Helper Springs part # SSR-307-47. However, as you mentioned the benefit of the SumoSprings is that they don't produce as harsh of a ride. The Timbrens are made of a much denser rubber than the SumoSprings which means they will provide more support but less ride comfort. It really just comes...
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  • Best Way To Prevent Sag While Towing with a 2019 Ram 1500
    Yes, the Timbren Rear Suspension Enhancement System part # TDR1500DQ is a confirmed fit for the rear of your 2019 Ram 1500 Laramie Crew Cab. The Timbrens are very easy to install as there are no tools required and they will do an excellent job of helping your truck handle heavy loads or tow a trailer. The newer Ram 1500's use a coil spring rear suspension system which offers better ride quality but lacks support while towing/hauling which is most likely why you are looking for suspension...
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  • SumoSprings Suspension Enhancement Recommendation for 2023 Ram 1500 Towing Travel Trailer
    Hey Ron, based on the weights you plan to tow the better option would be the higher rated # SSR-307-47 as it is rated for an additional 1,500 lbs of support as opposed to the part # SSR-307-40 at 1,000 lbs. The ride quality is going to be really similar between the two but the additional support will be more beneficial.
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  • Blue Ox SwayPro Weight Distribution Arms for 850 lb Tongue Weight
    I'm glad you trust us, and we can definitely help you out so you can enjoy your voyage instead of being understandably anxious about the sway. While there is always going to be at least a bit of sway, it should not be to the degree you were describing, and the reason you are experiencing that is because the spring bars for your Blue Ox SwayPro Weight Distribution Hitch # BXW0750 are not rated high enough. That system is designed for total tongue weights (TTW) between 550 lbs and 750 lbs,...
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  • How to Address a Sagging Rear End in a 2017 Ram 1500 Pulling a Travel Trailer
    Congrats on the new truck! I saw you were looking at suspension enhancement but I want to point you towards using a weight distribution system to address the sagging. It will level out your truck and trailer by transferring some of the weight from your Ram's rear axle to the front. Your 2021 Forest River Vibe 26RK has a tongue weight right around 1,000 lbs when fully loaded. With this in mind, I recommend the Equal-i-zer Weight Distribution System w/ 4-Point Sway Control item # EQ37120ET....
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  • Will SumoSprings Part # SSR-307-47 Interfere with Factory Air Suspension on a 2018 Ram Rebel 1500
    The SumoSprings Solo Custom Helper Springs part # SSR-307-47 will physically ft onto your 2018 Ram 1500 Rebel however, the factory air suspension system will likely interfere with the jounce springs. SuperSprings states that when they tested the SumoSprings on a model with air suspension, the air suspension system had problems while trying to lower the truck. Unfortunately, all of the other suspension enhancements we have for your vehicle will run into the same issue listed above.
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  • Suspension Enhancement for 2021 Ram 1500
    Hi Chandler; you won't find helper springs like the # HE94TR you were looking at for your 2021 Ram 1500. The Ram has a coil spring suspension, not leaf springs, which limits your choices for suspension enhancement. However, I do have a couple options you can choose from to get you extra support to level out the truck. The first is the SumoSprings Solo Custom Helper Springs # SSR-307-47. These have a weight capacity of 1,500 lbs and will level your ride, absorb bumps and shocks, and minimize...
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  • Recommended Suspension Enhancement for Load Leveling on 2016 Ram 1500
    For your 2016 Ram Bighorn 1500 the best leveling will be with the air spring options. My recommendation is the Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle # AL57365 which will let you adjust the air pressure from 5 psi to 100 psi to level your truck. They have a rated load leveling capacity of up to 5,000 lbs but they do not increase your truck's rated payload capacity. This product will not fit trucks with the factory air suspension system. This kit comes with the manual...
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  • Recommended SumoSprings for a 2021 Ram 1500 Pulling a Travel Trailer
    Thanks for the picture! For your 2021 Ram 1500 I recommend the SumoSprings Solo Custom Helper Springs item # SSR-307-47 over an air bag system. These 1,500 lbs capacity springs have a progressive load control. Which means the springs compress according to the weight of your trailer or cargo in the bed. When you are not towing or loaded down you won't notice they are installed. Under a heavy load these springs will compress by as much as 80% to support your suspension and keep your truck...
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  • Rear Suspension Enhancement Options 2022 Ram 1500 That Does Not Require Cutting Off Jounce Bracket
    Yes, if you are wanting to use the Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88375 on your 2022 Ram 1500 you will have to cut off the jounce bumper bracket. We do have some other options for adding support to the rear suspension on your Ram if you do not want to remove the bracket. First the SumoSprings Solo Custom Helper Springs will connect right to the bracket. These can be acquired with 1,000LB Capacity # SSR-307-40 or 1,500LB Capacity # SSR-307-47. Best of all they...
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  • Timbrens or SumoSprings For 2021 Ram 1500 Classic For Towing Travel Trailer
    For your 2021 Ram 1500 Classic, the better option for your suspension enhancement between the Timbrens and SumoSprings is definitely going to be the SumoSprings, with the correct fit for your truck being the following part number: - SumoSprings Solo Custom Helper Springs # SSR-307-47 The SumoSprings # SSR-307-47 are the better option compared to the Timbren # TDR1500DQ is simply because they are smoother. They both provide the same effective support for your Ram while you are towing,...
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  • Parts Recommended For Reducing Sag While Towing a 30' Travel Trailer With a 2021 Ram 1500
    The best part you can add to your 2021 Ram 1500 Bighorn for towing a 30' travel trailer is the Equal-i-zer Weight Distribution System # EQ37120ET. This hitch system will not only allow you to redistribute the tongue weight evenly across your Ram and reduce sag but will also add sway prevention to make driving safer. The large surface area on the side of the travel trailer makes it more likely to encounter sway caused by strong winds. This hitch is rated for a trailer with a tongue weight...
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  • Custom Helper Springs For A 2019 Ram 1500
    The SumoSprings Solo Custom Helper Springs # SSR-307-47 has a higher weight capacity being at 1,500 pounds and The SumoSprings Springs # SSR-307-40 have a 1,000 weight capacity. The # SSR-307-47 will be your best bet on your 2019 Ram 1500. The sumo springs have a simple, no-drill installation and will work in temperatures from -25 degrees F to 200 degrees F. Using the Sumo Springs will not increase your vehicle's weight-carrying capacity. I attached an installation video link below.
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  • Are the Blue or Black SumoSprings Going to Be Best For 2020 Ram 1500?
    Since your weight distribution hitch is working to keep your 2020 Ram 1500 level I recommend going for the lighter Blue # SSR-307-40 springs. These have the 1" spacer as well like the heavier Black # SSR-307-47 springs which you can take out or leave in depending on how the ride quality performs. I feel like with the lighter blue springs you will not notice them even if they are touching the leaf springs unloaded. Often times as trucks get older the springs sag so your suspension is likely...
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  • Timbrens or SumoSprings to Address Sag on a 2015 Ram 1500 Crew Cab Pulling a Trailer
    I highly recommend going with the SumoSprings Solo Custom Helper Springs item # SSR-307-47 over a Timbren system for your Ram. This system has a 1,500 lbs capacity that will keep the rear end of your truck level when pulling your horse trailer. These springs operate off of a system called progressive load control. The more weight you add to the rear end of your truck the more they will compress. They also work independently from each other to compensate for off-center loads. You will...
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  • Suspension Enhancement Recommendation for 2020 Ram 1500 Big Horn
    For additional support that won't hurt the unloaded ride quality of your 2020 Ram 1500 you'd want the SumoSprings kit part # SSR-307-47 which will do a great job getting rid of the suspension sag of your truck when towing your camper.
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  • Recommended Timbren Suspension Enhancement for a 2019 Ram 1500
    Yes, the Timbren Rear Suspension Enhancement System item # TDR1500DS will fit your 2019 Ram 1500Laramie Crew Cab. This fits both the 2WD and 4WD models. This 6,000 lbs capacity system will keep the rear end of your truck level when you are towing or hauling a heavy load. These springs work independently to compensate for off center loads. They help with body roll when you are swerving or making tight turns too. I have linked an installation video below. Unless you are constantly towing...
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  • Will Timbrens for a 2012 Ram 1500 Have a Bumpy Ride
    The Timbren Rear Suspension Enhancement System part # TDR1500DQ which is a fit for a 2012 Ram 1500 is a great option for additional support while towing or hauling heavy loads. That said, they can be a bit rough and produce a bouncy ride. Instead, I recommend the SumoSprings Solo Custom Helper Springs part # SSR-307-47 which are a bit softer so they won't provide quite as much support but they will make up for this in their ride quality improvements. The Sumo's unlike the Timbren's have...
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  • SumoSprings Over Timbrens for a 2022 Ram 1500 4WD
    I would be happy to help you and have a great suggestion for upgrading your suspension when towing your trailer but I do not recommend either Timbren set for your 2022 Ram 1500. TImbren's will give you a stiff and bouncy ride when you are not towing. I typically only recommend them on trucks that have a work body on the bed. To add some support to the rear of your truck I recommend the SumoSprings Solo Custom Helper Springs item # SSR-307-47. These have a 1,500 lbs capacity which will be...
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  • Comparing SumoSprings and Firestone Air Springs for 2020 Ram 1500
    As you mentioned, there are some pretty big differences between a jounce-style spring setup like the SumoSprings # SSR-307-47 and an air bag kit like the Firestone # F4130 for your 2020 Ram 1500, both in terms of install/maintenance and actual performance. The jounce springs definitely offer the easier install and require no maintenance thereafter, while the air bags are bit more intensive to setup and would need to be adjusted based on your truck's load. If you are okay with this though...
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  • Suspension Enhancement for 2019 Ram 1500 Classic
    I checked with RAS and they do not offer a fit for the 2019 Ram 1500 Classic at this time. For a suspension enhancement kit that fits your truck that provides support without being overly harsh the SumoSprings kit part # SSR-307-40 would work great.
    view full answer...
  • Comparing SumoSprings Helper Springs and Timbren Suspension Enhancement for 2016 Ram 1500
    The Timbren Suspension Enhancement # TDR1500DQ that fits a 2016 Ram 1500 crew cab (unless you have factory air suspension) are hollow rubber springs, which is the biggest difference between these and the SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-307-47 which are made of a microcellular urethane foam. What this means is that your Ram is going to have a stiffer ride with the Timbrens than the SumoSprings. Each option is going to help you reduce side-to-side roll and provide...
    view full answer...
  • Suspension Enhancement for 2019 Ram 1500 Classic Towing Travel Trailer
    Weight distribution is a solid solution for your towing setup but since you didn't like the experience of using the Fastway kit you had and basically all of the kits are going to be about the same I'd recommend going with suspension enhancement to give you the support you want with less hassle. For your 2019 Ram 1500 Classic the best option for that is the SumoSprings kit part # SSR-307-47 which will give you the best combination of support, ride quality, and ease of use. Other options...
    view full answer...


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Info for this part was:

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