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  1. Vehicle Suspension
  2. SuperSprings Intl
  3. Bump Stops
  4. Towing/Load Leveling
  5. Rear Axle Suspension Enhancement
  6. Light Duty
THIS ITEM IS NOT A FIT FOR
2010 Smart fortwo
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SuperSprings Intl

SumoSprings Solo Custom Helper Springs - Rear Axle

Part Number: SS47UJ
In Stock
$257.99
Vehicle Suspension
Not Confirmed to Fit

2010 Smart fortwo

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You load up for a weekend off the grid, knowing the weight will shift on rough trails. Instead of bracing for every dip, you drive with steady control and a smoother feel that lets you focus on the road ahead. Great Prices for the best vehicle suspension from SuperSprings Intl. SumoSprings Solo Custom Helper Springs - Rear Axle part number SS47UJ can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (15)
  • Q & A (0)
  • Videos (1)
  • Photos

SuperSprings Intl Vehicle Suspension - SS47UJ

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

You load up for a weekend off the grid, knowing the weight will shift on rough trails. Instead of bracing for every dip, you drive with steady control and a smoother feel that lets you focus on the road ahead.


Highlights

  • Progressive Load Support: Compresses with weight for smoother control.
  • Reduces Rear Sag: Helps keep your stance level under load.
  • Improved Stability: Limits sway and body roll on uneven terrain.
  • Maintenance-Free Design: No air lines, leaks, or adjustments needed.
  • One-Piece Upgrade: Replaces factory bump stops with simple setup.
  • Vibration Dampening: Softens harsh rebounds and road feedback.
Made in USA

Features to know about

Stay Level When the Bed Gets Heavy: Progressive Load Support


Installed spring when it is not compressed Installed spring when it is compressed

When you load up gear for a trip or haul tools for the job, the rear end can start to squat and throw off your handling. These springs compress as weight comes on, adding up to 1,000 lbs of support at 50% compression so your truck stays more level and controlled.

Take the Edge Off Rough Roads: Micro-Cellular Cushioning

Rough trails and uneven pavement can make the back end feel harsh and bouncy. The closed-cell polyurethane design acts like a cushion, soaking up bumps and softening rebounds so the ride feels more settled instead of choppy.

Cut Down on Sway in Corners and Crosswinds: Progressive Resistance

You know that uneasy feeling when the rear starts to lean in a turn or shift in the wind. These springs firm up as they compress, helping reduce sway and body roll so the truck feels more planted when things get unpredictable.

Forget Constant Adjustments: Maintenance-Free Design

Air systems can be a hassle with lines, leaks, and pressure checks. This setup is a one-piece solution with no maintenance needed. Once it is in, you can just drive and not think about it again.

Simple Upgrade from Factory Stops: One-Piece Replacement

Instead of stacking add-ons, this replaces your factory bump stops directly. It is a clean, straightforward upgrade that works quietly in the background without changing how you use your truck day to day.

Smooth Out Loaded and Unloaded Driving: Consistent Rear Support

Some setups only help when fully loaded, but these stay engaged lightly even when you are not hauling. That means less rear-end bounce on daily drives and more control whether the bed is empty or packed.

Specs

Capacity:

  • 1,000 lb at 50% compression

Warranty:

  • Limited lifetime warranty
  • 30-day satisfaction guarantee


SSR-408-40 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Trucks

Installation Details SS47UJ Installation instructions

This Product Fits The Following Vehicles




Video of SumoSprings Solo Custom Helper Springs - Rear Axle
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of SuperSprings Intl Vehicle Suspension - Towing/Load Leveling - SS47UJ

Hi, everyone, Steve here with etrailer. Let's take a look together at the SumoSprings Solo Custom Helper Springs for the Rear Axle. Folks, these are a custom application, so please make sure you're checking the Fit Guide over at etrailer.com. Be sure you're getting the right parts the first time. Now, this suspension kit is gonna be a great simple upgrade to the rear suspension, and it's designed to improve your load, support, stability, and overall ride quality. Now, these, unlike airbag systems, are completely maintenance-free.

There's no airlines, no compressors, nothing you have to adjust. Once you get them installed, you're set up, and they're always gonna work for you. They're made of a microcellular urethane material. That's gonna give you a progressive spring rate of 1,000 pounds at 50% compression, which just means they're gonna stay soft when they're unloaded and look like this, and they're gonna be compressed and firm up as that weight increases to provide extra support. Installation is straightforward.

You just simply take off your factory bump stops. These go right in place, and you have the included hardware needed for installation, and that's it. So, these are gonna absorb road shock. They're gonna smooth out harsh impacts without affecting your normal ride, and they are great at reducing rear-end sag, sway. They're gonna give you better overall control.

Especially when you're hiding gear, towing, maybe even you got uneven loads and stuff, these are great. So, if you haven't checked them out before, give them a try. We do offer these in different ratings, so these, again, are 1,000-pound rated. Again, we have a couple other ones, a little bit heavier as well if you need just a little bit more. So, check them all out over here at etrailer.

That's gonna wrap up our look together, and as always, if you need help with the install, you can always use our Installation Location link below, and with your ZIP code, we can help pair you with trusted etrailer installers around the country. Thanks for watching.

Customer Satisfaction Score:

Ratings & Reviews

4.5

15 reviews
5 Stars
(9)
4 Stars
(4)
3 Stars
(2)
2 Stars
(0)
1 Star
(0)
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by:
2009 dodge Ram Pickup
I installed these on a 2026 Ram 1500. I had the Timbrens on my 09 GMC Sierra 1500 and they definitely made the truck feel like you were driving a 3500. These Sumo Springs still give a change to the ride quality over the OEM feel but no where close to what the Timbrens were like. They only sit a 1/2" off the axle so you feel them engage but again nothing huge. The thing that is nice with these is you can remove them and install the OEM bump stops in less then 5 mins. Same with installing them. So my plan is to keep swapping them out as needed. You will need to jack the truck up slightly to get them in and out. No tools requires beyond the jack. Would definitely recommend if you tow occasionally. For reference my trailer is a 16ft enclosed and with a 750lb tounge weight I dropped 2 3/4" stock. With the Sumo Springs I only dropped 1 1/2". The control with them in is what I enjoy the most. Nothing like that feeling of hitting that huge dip on the highway and wondering if your going to bottom out. With the Sumo Springs is solid and no bounce.
by:
So easy to install! Only took 15 minutes to install and I took my time.
by:
2026 Ram 1500
Install couldnt be easier...literally. Factory ride still intact and extra support when townig. Perfect for me.
by:
They were very easy to install. Less than 15 minutes. Good fit
by:
2026 Ram 1500
Great people great company. Very friendly and professional
by:
2026 Ram 1500
I still have alot of sag when towing. The ride is fine but doesn't really help with sag as much as the Tembren but ride better than the Tembren
by:
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by:
2021 Ram 1500
by:
2020 Jeep Gladiator
This only pertains to the order, shipping speed, and install as I have not put a heavy load on these sumo Springs yet but I feel like that's a foregone conclusion based off the reviews already. The ordering process, the shipping, and the installation was unbelievably easy. I kept rereading the instructions thinking this can't be right because it was so simple. I looked at the YouTube video and realized it is that simple! So happy with the ordering process, the quality of the initial product I opened, and how simple it was to put on the jeep.
Claire H. profile picture
Etrailer Expert

Claire H.

9/1/2026

That is the beauty of SumoSprings! Super easy to install and once they're on you can forget they're there! Are you planning on towing something with your Jeep that you want extra support for?

Justin profile picture

Justin

9/1/2026

@ClaireH yes Ms Claire. I plan to put a truck camper on the Jeep (that weighs in the 500-1000 lbs range). My payload is 1700 lbs so I know a camper of the weight will be significant my truck. Already ordered a stiffer rear anti-sway bar as well.
Claire H. profile picture
Etrailer Expert

Claire H.

9/2/2026

@Justin That sounds like a good plan! These SumoSprings plus the sway bar should be more than enough to handle the weight of your truck bed camper.
by:
2013 Jeep Wrangler Unlimited
I put these on a 2013 Jeep JK (not lifted) that tows a 3000 lb trailer in rough terrain; Total game changer.

These replaced the anemic factory stops (which had completely disintegrated) and make it impossible to 'bottom out' on the dips and holes that use to beat up the suspension. I got nearly all of my vertical travel back and the vehicle now sits almost level under high tongue load.

They go on pretty easy. I suggest sliding in one side, and then using a wooden dowel and hammer to pop the other side in the stock receiver cup.

Highly recommended. These are a MUST if you are towing a trailer (with a medium sized SUV) of any significant weight or if you just want to be able to bounce hard without bottoming out your suspension. I am likely going to get the front suspension version now as well.
Wish I knew these existed sooner.
Heather A. profile picture
Etrailer Expert

Heather A.

8/12/2026

Wow thank you for the glowing review Randall. It sounds like once you got them installed they are working out great. That sunset is gorgeous, where were you in this photo?

Randall profile picture

Randall

8/12/2026

@HeatherA This photo was taken in South West Colorado @ about 10,000 ft.
by:
2025 Promaster 2500 159” wheelbase. Backed the van on couple 2” X 6 “ easier sliding under. Sprayed PB Blaster on top of bumper spring, using a 16” Channel Lock, easy off with the old. At that time I jacked the rear end to allow clearance. One side at a time. Took longer for set up then the job. I used the long bolt with two spacers. Have not drove yet, though looking for great results.
Lazer S. profile picture
Etrailer Expert

Lazer S.

5/13/2026

Glad to hear the install wasn't too bad, Michael! Definitely let us know how the ride is once you take it out for a drive! What are you using your Van for? The tires look pretty beefy.

by:
2022 Ford F-150
Love them! The truck barely even squatted, had two dirt bikes, and a generator in the bed as well! It handles the bumps and sway great
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

5/20/2026

Looks like you were about to head off somewhere fun, Chad!

by:
Product is great, exceeded my expectations. Install is simple and straightforward. It’s a night and day difference in both the body roll and the handling small bumps all the way up to off-road conditions.
Christopher H. profile picture
Etrailer Expert

Christopher H.

8/4/2026

Happy to hear the # SSR-118-54 was a simple install and is working well for you. This is a great system!

by:
Put these on a Jeep Gladiator to haul a motorcycle to Sturgis. Kept everything level, good ride and stability. Highly recommend.
by:
2000 Nissan Leaf
Great product! Bought these for my 2000 7.3 f250. Didn't want something that is constantly active like ras or hellwig since my leaf springs are new and rated for 4k pounds. Installed these in 1 hr super simple only hard part was the factory bump stop on driver side was a pain. Didn't install the puck they give due to height of truck and I knew more or less at what point I wanted them engaging. I haul cattle to shows/ auctions or between pastures with my 24ft big bend and these things actually provided a smoother ride in my truck loaded then unloaded.they do a great job with the added support and are better than an overload spring with handling sway and providing a smooth ride loaded. Just wish I could use the 3k pound rated ones on this truck and my dually but doesn't fit if you have a gooseneck sadly so will probably have to go with timbs on the drw. Over all great product can't speak to longevity but solid for the time being. And customer service with this company is excellent if you have a question or problem they're on top of it...hope they pay them as well as the reputation they're building for them.
by:
Very easy installation. The improvement in handling is phenomenal.
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

4/23/2026

Thanks for the awesome feedback, Jeff! Love hearing that the install was a breeze and that you noticed such a big difference in handling, that’s exactly what you want after the upgrade. Really appreciate you sharing the photos too, it’s always fun to see the comparison.

by:
2024 Chevrolet Silverado 1500
I put a set of 47s on my Silverado 1500 and towed my dump trailer that weighed 6000 pounds the way I had it loaded for 50 miles on all kinds of roads and it worked well. I didn’t use the spacers and the truck still rides like it did before the install.
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

1/8/2026

Glad the Sumos are helping make your loads easier to tow!

by:
Jeep Gladiator Mojave - swapped out the rear stock bump stops with these. High quality parts. Just jack up the truck enough to give you room to work with and put in your jack stands, no need to remove the wheels. I look forward to seeing how they do with towing! Hopefully I can update my review here afterwards. Check out the gap difference in the pictures. Should touch sooner during normal drive conditions and hopefully help reduce some trailer squat and help towing to be smoother.
by:
Opted for the Blue 1000lb Sumo's w/spacer over the 1500lb Black ones. 1500 Silverado Max Tow & reduces squatting by 2" on a 1000lb+ tongue weight. Ride is still good, but you can feel the Sumo's engage over large dips or bumps which is not an issue for me.
Richard profile picture

Richard

2/12/2026

No issues. Towed a 27 Airstream around 4k miles &amp its all good.

Lazer S. profile picture
Etrailer Expert

Lazer S.

2/12/2026

@Richard Nice! Glad you are still happy with them! Was that all one trip, or multiple different trips?
by:
I got the springs installed last week and wanted to have a drive time before I wrote the review.

The height of the springs are perfect for my 2016 Tacoma, They keep the truck stable and nearly eliminate the body roll I had before installing them. I am heading to the mountains in a couple weeks, so I will update the review when I get back. That way I will know for sure the body roll is gone and the truck is stable on the winding mountain roads.

The springs installed in no time at all and since I had the rear end apart, I decided to add the leveling blocks at the same time, to keep the truck from squatting with the gear I haul around with me.

The guys at etrailer are great. And while I did not call them to discuss this item, they have been very helpful in the past with all my questions.

Below are pictures of before, a couple comparisons and after. Sorry if they come out sideways.

These Sumo Springs were a great addition to my Tacoma and well worth the money, IMHO.
Mike profile picture

Mike

7/31/2025

The springs are working exactly as expect. I have need up to the mountains numerous times and to Monerary to the Sea Otter bike fest. They have reduced the body roll and helped keep the truck stable on the mountain roads or when loaded down for camping. Im very pleased I added these Sumo Springs to my Tacoma.

Jon G. profile picture
Etrailer Expert

Jon G.

7/31/2025

@Mike We LOVE to hear reports like this! I've never been to the Sea Otter bike fest, but I looked it up online and it looks pretty cool! How many times have you gone to it?
by:
Got them installed no issues the reason for 4 stars is one side touches top of axle the other side does not no one could tell me if this was right or wrong also haven't pulled 5th wheel yet to feel the ride or handling so we will see thanks
by:
2024 Ford F-250 Super Duty
Definitely helps with squat on '24 F250 from boat trailer tongue weight. These do come with a plate to avoid uneven contact or wear.
I mounted using all spacers , stock is same unless speed bumps or large dips, u feel the stiffness/contact of sumo as expected. May take one spacer out .
Super easy to install , better than leaking bags.
Time will tell how they last
Lazer S. profile picture
Etrailer Expert

Lazer S.

9/16/2025

Glad to hear they are helping, Cory! If you are feeling them going over speed bumps, I think taking one of the spacers out is a good idea. Especially if that is happening when you are unloaded. Speaking of which, what are you towing?

Cory S. profile picture

Cory S.

9/19/2025

@LazerS 30' center consol 12,5k lbs on a dual axel trailer.
Lazer S. profile picture
Etrailer Expert

Lazer S.

9/23/2025

@CoryS Nice! I've been on a couple center console boats that moved faster than they probably should have! Grew up on and around boats in San Diego. There were some very "iffy" things done to make them faster. : P
by:
2021 Nissan Titan
I had installed this model SumoSpring on my 2019 4Runner and had great results when towing the camper I had at the time. They greatly reduce the bounce when going over dips in the road at highway speeds. Now I have a 2021 Titan and a bigger heavier camper. I expect the same great results on the Titan. Installation was pretty straight forward and took about a half hour. The size difference between the OEM bump stops and the SumoSprings alone should give a better ride when towing my camper.
Albert profile picture

Albert

7/16/2025

Still working like new. So much better than the factory bump stop.

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Info for this part was:

Employee Steven C
Installed by:
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Employee Katherine B
Edited by:
Katherine B
Employee Kim H
Written by:
Kim H

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