SumoSprings Solo Custom Helper Springs - Rear Axle
(2427 reviews)
Price: $341.99
In Stock
SuperSprings Intl
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SumoSprings Solo Custom Helper Springs - Rear Axle
In Stock
$341.99
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SuperSprings Intl Vehicle Suspension
- Jounce-Style Springs
- Rear Axle Suspension Enhancement
- SuperSprings Intl
- Standard Duty
2,800-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, high-density 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): 2,800 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.
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.
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-313-54 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Vans
Replaces SSR-308-54
Item # SSR-313-54
Installation Details
This Product Fits The Following Vehicles
- 2014 - 2025 Ram ProMaster 1500
- 2014 - 2025 Ram ProMaster 2500
- 2014 - 2025 Ram ProMaster 3500
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
- Wrong item was ordered
- Too difficult to install
Customer Reviews
SumoSprings Solo Custom Helper Springs - Rear Axle - SSR-313-54
Average Customer Rating: 4.7 out of 5 stars (2427 Customer Reviews)
2,800-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: Frank04/24/2024
So I am an expert because I watch YouTube and I went to coledge. If you want crap then go to that jungle site that specializes in "cheap-n-fast" but if you want some great s%&t then go with eeeeeeetrailerdotcom. You know I know because not only can I computer but I cann spel. I have used et.com to set up my Promaster to tow my boat, to set up my RAM 1500 to tow heavy stuff and setting up my Nissan Frontier to tow my camper. Don't be a dumb-head-poop-4-brains, watch their videos and you too can be as amazingly smart as myself!
by: William 07/03/2024
Thor Dazzle now handles like a dream. No more feeling that it's going to tip over on sharp curves
by: Brett11/11/2022
I wish I installed these earlier on my Ram Promaster converted into a camper van, the improvement in stability, feel and peace of mind. No longer blown around in high wind, better towing for my boat, firmer feel just driving normal. Hard to describe all the benefits but for how reasonable they are priced and ease of installation certainly wish I had these day one when I bought the van. 100% will install these again on future vehicles and would definitely recommend this to any and everyone
by: Kenneth04/21/2022
I am happy doing bussines with Etrailer, I ordered the wrong Super springs for my Ram Promaster 2500 by mistake, called them up spoke to miss Paula and she was able to find and ship the correct one fot my Vehicle within a couple of days. She even send me a Return lable so I can return the other one back to the company. I look forward to continue doing bussines with this company.
by: Ruben07/22/2021
2021 Ram ProMaster 3500
Pretty easy install on a Winnebago Solis, built on the Ram Promaster 3500 chassis, took about an hour to install on all 4 wheels. I only parked on a level surface and used the factory jack, didn’t even lift the van off the ground all the way but enough for clearance to install, no tire removal done. I gained about an inch of clearance which is nice for my onboard generator and hoping for a better ride on windy days. The pictures are before and after of (in order) front, rear, size difference of Sumo vs. oem and the generator.
by: Theresa11/16/2023
2023 Ram ProMaster 2500
Good communication. Product arrived on time exactly as described. I've ordered many items from etrailer. Always a good experience! Thanks.
by: Peter 03/22/2024
They've been great
by: Keith M12/20/2020
2016 Dodge Ram Pickup
The Sumosprings solved the bad wind swaying problem in my 2016 Roadtrek Simplicity RV built on a Ram Promaster 3500 high roof chassis. Before it was white knuckle driving, now it drives like a sedan. My local RV dealer installed them for a one hour labor charge. The improvement is amazing! Right before going bankrupt, Roadtrek began putting SumoSprings on their special "National Parks" vehicle - they are a necessary addition!
by: Jim 12/12/2019
2019 Dodge Ram Pickup
Very prompt delivery and great “in-route” communication. Installed on a 2019 RAM ProMaster 3500 (configured as a Winnebago Travato). Easy,easy install. Used to replace the factory bump stops. Installed using the extra provided spacer and as many have said, raised the rear height by one inch, and provided the added stability to limit sway and improved straight line stability. So far a great product and great purchase experience.
Jim
12/13/2020
Still going strong after 12 months and 10,000 miles. Ive since installed the front spring helpers and been very pleased with the overall improved handling of the van. I highly recommend doing at least the rear bump stops.
by: Evan 11/13/2021
Dodge Ram Pickup
These things are awesome. Perfectly manufactured, fit perfectly and installed very easily. I needed the extra 1/2” or so of ride height to prevent bottoming out when backing up my steep driveway on my RAM Promaster 3500.
Evan
11/15/2022
These springs continue to be working perfectly after 1 year and 10,000 miles. The ride continues to have much less side-to-side sway in turns and against opposing trailer truck traffic! But remember to buy and install the front springs too for the best ride comfort.
by: Sam05/20/2019
2017 Dodge Ram Pickup
Put these and the front Sumos on our 2017 Winnebago Trend (Ram Promaster 3500 chassis). These were very easy to install; the front ones took more elbow grease and patience. They make a big difference in handling, especially when big rigs pass on the freeway. Very satisfied so far.
Steve M.
5/21/2020
Still happy after a year, although not happy about not being able to get out on the road due to CV-19.
by: Wayne 11/16/2023
Great service as usual.thank you
by: James 05/29/2020
The product speaks for itself, very high quality at a very fair price. The big deal here is e-trailer. This has been my "go-to" place to shop since we started RV'ing 15 years ago. They are terrific to work with and if they don't have what your looking for it's most likely because that item just hasn't been invented yet. I will continue to shop at e-trailer.
by: John 06/28/2021
A great product. Ride and stability is much better. Highly recommend these.
by: Randi12/07/2018
2015 Winnebago Trend Motorhome
Received product quickly and spent 1 hour putting the sumo springs on.
Very pleased with product.
by: Kim 12/17/2021
PRICING BEATS MY MAIN DISTRIBUTOR, BY FAR! I ALWAYS GO TO ETRAILER TO ORDER SUMO SPRINGS.
by: John 04/26/2021
Dodge Ram Pickup
These we the best investment I have made for my Ram Promaster. Before I purchased them it was like I was floating all over the road.
by: Louis06/24/2018
2009 Hyundai Tucson
Package arrived promptly and installation was straightforward.
Thank you Pat C at etrailer.
by: Attn:07/20/2020
2018 Ram ProMaster 2500
Instant difference in my Promaster. Can't believe I waited 9,000 miles to make this change. Highly recommend.
by: Lex08/21/2020
The bumpy ride has been minimized. And when rigs goes by us , the rv does stay more stable, but not that much.
It drives a bit more firmer than before.
by: Bill 08/12/2021
2021 Ram ProMaster 3500
Easy to install on my Thor Sequence, removed 1 spacer to keep about 1/4 inch of air gap. Ill put some miles on them and update.
Bill
8/13/2022
Still working great, no lean in turns and ride is smooth. Great addition.
by: Cindy10/02/2021
Love them on the Travato. Love etrailer too.
by: Glenn09/23/2022
A noticeable difference in sway on corners and in windy conditions. Highly recommended.
by: Isamu09/10/2021
2018 Ram ProMaster 3500
Relatively easy install. The handling has become more stable with less body lean since I’ve installed these springs on my RV. Very happy with the purchase.
by: Kevin 01/06/2021
Product is as described and installs very easy. I will update this post after I have rolled with them installed for a while.
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See what our Experts say about this SuperSprings Intl Vehicle Suspension
- Reducing Stiffness of SumoSprings Solo Custom Helper Springs # SSR-313-54 on 2022 Coachmen Nova 20CFirst you will want to check your 2,800lb SumoSprings Solo Custom Helper Springs # SSR-313-54 to determine if 2nd 1" spacer was installed with the springs. If you have both the 1" spacers you will want to remove the 1" spacer which doesn't have the pressed in nut. This will help to reduce how much the spring compresses under a normal load. As the spring is progressive it will reduce how stiff the spring is and help to smooth your ride. If you are still finding the ride is to harsh you...
view full answer... - Recommended Suspension Upgrade for a 2021 Ram ProMaster 3500Yes, you should add the Coil SumoSprings Custom Helper Springs for Coil Spring Suspension item # CSS-1195F to the front suspension on your 2021 Ram ProMaster 3500. These helper springs adjusts progressively to the weight of your load. I have linked a review video below. As far as your air lift system goes for the rear end, I recommend the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers item # AL88233. This system includes a jounce bumper that will stop...
view full answer... - Recommended Sumo Springs for 2019 Ram ProMaster 2500 Converted to RV/OfficeSumo Springs are a great solution that are easy to install and don't require any type of maintenance once they're on. I recommend using the SumoSprings Solo Custom Helper Springs # SSR-313-47 because of the springs compress easily at first for soft engagement and a less bumpy ride. These springs are useful for up to 1500-lbs of additional weight in our ProMaster, so they're a good fit for your RV/Office. You could go up to the # SSR-313-54 which are designed to offer 2800-lbs of load...
view full answer... - Suspension Enhancement for Front and Rear of 2018 Ram ProMaster 3500Since your 2018 Ram Promaster 3500 has coil springs in front you'd need the # CSS-1195F for the front and then for the rear # SSR-313-54 like what you referenced.
view full answer... - Recommended SumoSpring Kit for Winnebago Trend 23B Built on Ram Promaster 3500 ChassisSince you want comfort over additional capacity you'd want the lighter duty # SSR-313-40 since it wouldn't be as harsh.
view full answer... - Fit of Super Springs SSR-313-54 For Rear Axle of 2014 Ram ProMaster 2500The Sumo Springs Custom Helper Spring Kit you mentioned, part SSR-313-54 is indeed a fit for the 2014 Ram Promaster Van. The kit contains two springs for the rear axle. The springs themselves are rated up to a 2800 lb capacity, but be aware that the springs will not increase the existing capacity of your rear axle.
view full answer... - SumoSprings Rear Suspension Enhancement for 2021 Winnebago Solis ProMaster 1500For your 2021 Promaster 1500 Winnebago Solis Pocket the SumoSprings kit part # SSR-313-54 would be a great option for rear suspension enhancement that is confirmed as a fit and would provide up to 2,800 lbs of additional suspension support.
view full answer... - SumoSpring vs Timbren Recommendation for 2017 Ram ProMaster 3500 RV ChassisFor RV applications the SumoSprings tend to be the better choice as they are less harsh than the Timbrens. Because of that I would recommend the part # SSR-313-40 which is a confirmed fit for your 2017 Ram ProMaster 3500 chassis. This is the lightest duty kit available which is the way to go since the higher rated kits are going to make the ride a bit harsher.
view full answer... - Do Front and Rear SumoSprings Need to be Installed on 2018 Ram ProMaster 2500 Near GVWRSince you are loading your 2018 Ram ProMaster 2500 up to the GVWR I recommend starting off using the SumoSprings Solo Custom Helper Springs # SSR-313-54 for the rear axle. These are the heaviest duty option available which is what you need for your application. If you had a passenger vehicle then I would say that the rear SumoSprings would be enough but since you have an RV I also recommend installing the Coil SumoSprings Custom Helper Springs # CSS-1195F. These will not only assist your...
view full answer... - Recommended SumoSpring Kit for Itasca Viva Motorhome Built on Ram Promaster 3500 ChassisAll three SumoSprings kits fit your 2018 Ram Promaster 3500. The difference is the capacity of each. The # SSR-313-54 is the highest rated at 2,800 lbs, the part # SSR-313-47 is 1,500 lbs, and the # SSR-313-40 is 1,000 lbs. Due to the weight of your motorhome I'd recommend the highest capacity kit # SSR-313-54 which will make the biggest difference.
view full answer... - 2018 Promaster 2500 SumoSpring RecommendationFor your 2018 Ram ProMaster 2500 the SumoSprings rear suspension kit you'll need is the part # SSR-313-54. This has the most support at 2,800 lbs which will be ideal since you will be converting your setup to a camper. I'd first try it with both spacers. If you find the ride quality is too harsh then maybe take the one out, but I would be shocked if you didn't prefer the spacers. The springs are most likely going to touch all of the time due to the additional weight you are adding.
view full answer... - Rear Suspension Enhancement Kit for 2017 Winnebago Trend 23CSince there isn't a 2017 Winnebago Trend 23C most likely you have the 23D which for a suspension enhancement kit you'd want the SumoSpring kit part # SSR-313-54 which will give the rear suspension more support and will also do a great job increasing stability.
view full answer... - Rear Suspension Enhancement Product for Class C Motorhome to Decrease Sway and Increase Ride HeightAssuming that your RV doesn't already have one, an anti-sway bar like # RM-1129-143 will keep your rear axle tied perpendicular to the frame which will be the most effective way to prevent the front end from getting squirrely on you. However, this option wouldn't affect your ride height. If you already have the OEM anti-sway bar, the addition of SuperSrings # SSA11 will offer pretty effective sway resistance, but would also raise your ride height by about an inch and would also help reduce...
view full answer... - Why Can't Curt Hitch for 2014 Ram ProMaster be Used with Weight DistributionTypically the hitches that are rated for use with weight distribution systems attach in a few places to the bottom of the vehicle frame. The use a longer mounting flange that helps to handle the additional torque that a WD system puts on the vehicle frame. The Curt hitch part # C13295 instead only attaches to the frame where the bumper attaches and just doesn't have enough contact with the frame to handle the additional stress. To reduce sag you could use rear suspension enhancement as...
view full answer... - Recommended Sumo Springs For A 2019 Hymer Aktiv MotorhomeI can certainly point you in the right direction. For the rear axle of your 2019 Hymer Aktiv Motorhome, I recommend the SumoSprings # SSR-313-54. These are the 2,800 lb capacity jounce springs. They will replace the factory bump stops and do a great job of leveling your ride, and absorbing shock. For the front axle, we do not carry any jounce springs, but you can use the SumoSpring coil helpers # CSS-1195F. This is an insert that goes on the factory coil springs. This will help add support...
view full answer... - Suspension Enhancement For a Smoother Ride On a 2022 Coachmen Nova 20C Class B MotorhomeThere are a few different SumoSprings for the rear of your 2022 Coachmen Nova 20C. If you have the lightest 1,000LB # SSR-313-40 springs on your Nova these are not going to provide enough support for all the additional weight added to you camper. A better option would be the 1,500LB # SSR-313-47 or 2,800LB # SSR-313-54 depending on how much cargo you are carrying or towing. Please let me know what you have and the types of loads you are carrying and I can help you determine if there is...
view full answer...
Used Items Available
Info for this part was:
Edited by:
Leah B
Expert Research:
Mike L
Expert Research:
Jameson C
Video by:
Andrew K
Video Edited:
Joshua S
Installed by:
Cole B
Installed by:
Robert C
Written by:
Mary K
Updated by:
Wilson B
Updated by:
Alex H
Updated by:
Noah M
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Keith M.
12/22/2021
still handles very well. A very necessary upgrade!