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  1. Vehicle Suspension
  2. SuperSprings Intl
  3. Bump Stops
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  6. Rear Axle Suspension Enhancement
SumoSprings Solo Custom Helper Springs - Rear Axle
SuperSprings Intl

SumoSprings Solo Custom Helper Springs - Rear Axle

In Stock
$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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SuperSprings Intl Vehicle Suspension

  • 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-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:

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

  • 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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  • 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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  • 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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  • 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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  • 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 SumoSprings for a 2022 GMC Sierra 2500 Pulling a 44' Trailer
    Hey Jeffery yes that's true. SumoSprings are going to give you a better ride because SumoSprings are progressive springs, so their initial engagement is lighter than the Timbrens. There are a bunch of different ones for your GMC, but I'd suggest going with the SumoSprings Rebel Custom Helper Springs # SSR-203-47-2 because these are rated a bit higher and you're pulling a pretty big trailer. These springs have a bolt on install, are maintenance free because there is no tubing, and includes...
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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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  • 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 Suspension Upgrade to Stop a Sagging Rear End in a 2021 Ram 1500
    I would be happy to! To keep your rear end from sagging when you're pulling a trailer or hauling a load in your 2021 Ram 1500 bed, I recommend the SumoSprings Solo Custom Helper Springs item # SSR-307-47. These have a 1,500 lbs load leveling capacity. They attach with custom fit mounting brackets and are compatible with both the 2WD and 4WD models. The SumoSprings item # SSR-307-47 work off a system called progressive load control. They only engage when there is weight put on them. These...
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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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  • Best SumoSprings For 2022 Ram 1500 Towing Camper Trailer
    The best option for SumoSprings for your 2022 Ram 1500 for towing a camper trailer are the 1,500 lb capacity springs, with the correct fit for your truck being the following: - SumoSprings Solo Custom Helper Springs # SSR-307-47 The reason why the # SSR-307-47 are the best for your '22 Ram for towing a camper is because they have enough capacity at 1,500 lbs to give your suspension the support it needs and won't provide a stiff ride like the higher-rated springs can. The 1,000 lb SumoSprings...
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  • What is the Difference between Timbrens and SumoSprings for My 2022 Ram 1500 4x4?
    If you are considering Timbrens like the # TDR1500DQ and the SumoSprings like the # SSR-307-47 for your 2022 Ram 1500 4x4, I recommend the SumoSprings # SSR-307-47. The SumoSprings will offer the same quality as the Timbrens in terms of suspension support, but won't give you quite as harsh a ride. The reason why is the SumoSprings are a progressive spring, so their initial engagement is lighter than the Timbrens (which can sometimes be pretty jarring). I have added an installation video...
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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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  • Which SumoSprings Kit for 2020 Ram Rebel 1500
    We have two SumoSpring options that fit your 2020 Ram 1500 Rebel with the tow package. We have the part # SSR-307-47 which can provide up to 1,500 lbs of additional support or we have the # SSR-307-40 which can provide up to 1,000 lbs of support. Since you will be on the higher end of your towing capacity the better option would be the 1,500 lb # SSR-307-47. Unlike other options (Timbren specifically) the SumoSprings aren't nearly as harsh so the higher capacity kit won't make your daily...
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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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  • 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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  • Timbrens or SumoSprings For 2021 Ram 1500 Crew Cab For Helping With Sag
    For your 2021 Ram 1500 Crew Cab, between the Timbren Rear Suspension Enhancement System # TDR1500DQ, 1,000 lb capacity SumoSprings Solo Custom Helper Springs # SSR-307-40, and 1,500 lb SumoSprings Solo Custom Helper Springs # SSR-307-47, the option I recommend for your Ram is the latter: - 1,500 lb SumoSprings Solo Custom Helper Springs # SSR-307-47 While neither will completely eliminate sag, the SumoSprings will offer the same quality as the Timbrens in terms of suspension support,...
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  • Best Rear Suspension Enhancement For 2022 Ram 1500
    I recommend using the SumoSprings Solo Custom Helper Springs - Rear Axle item # SSR-307-47 to address sag in your 2022 Ram 1500. Timbrens will offer you a rough unforgiving ride and are typically only recommended when there are no other options or on work trucks with service beds. The SumoSprings will help with the weight put on the rear of your truck when towing but you will not notice them during daily driving. Another way to address sag are the SuperCoils Custom Suspension Coils item...
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  • Recommended Rear Axle Jounce Spring Kit for 2017 Ram 1500 4x4 Quad Cab
    Air bags kits are a better option when your trailer or cargo load varies a lot, especially with an uneven cargo load, but for towing one trailer that is more or less uniformly loaded up each trip I recommend jounce springs. Jounce springs will give you progressive rear axle support when you need it but they will otherwise not affect your ride quality. They also cost less than air bag systems, are much easier to install, and they require no maintenance. Since most of your trailer's 5900-lb...
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  • 1,500 lb or 1,000 lb SumoSprings For 2016 Ram 1500 With Weight Distribution
    Thanks for all that info it was definitely helpful, and we can get your 2016 Ram 1500 set up with the right SumoSprings. You are right about the SumoSprings being something that will help your truck, and between the 1,500 lb SumoSprings # SSR-307-47 and 1,000 lb SumoSprings # SSR-307-40, I recommend going with the 1,000 lb option: - SumoSprings Solo Custom Helper Springs # SSR-307-40 The reason for that is you mentioned you already had a weight distribution system, and that you didn't...
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  • Can I Use SumoSprings with a Weight Distribution Hitch?
    Yes, you absolutely can use the SumoSprings Solo Custom Helper Springs Item # SSR-307-47 with a weight distribution system. Those springs were designed for exactly the type of issue you are encountering. These will keep your 2019 Ram 1500 Classic level when you're towing your RV. You can use them with a weight distribution system but you may not need to unless you're also needing it for sway control. I recommend hauling with and without the weight distribution system connected after you...
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  • Comparing Timbrens and SumoSprings for 2020 Ram 1500
    Both the SumoSprings # SSR-307-47 and Timbren # TDR1500DQ for the rear axle of your 2020 Ram 1500 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 # TDR1500DQ 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 8,600 pounds. They will do a better job...
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