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

SumoSprings Solo Custom Helper Springs - Rear Axle

Item # SSR-611-40
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Vehicle Suspension

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SSR-611-40 - Light Duty SuperSprings Rear Axle Suspension Enhancement
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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. Lowest Prices for the best vehicle suspension from SuperSprings. SumoSprings Solo Custom Helper Springs - Rear Axle part number SSR-611-40 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (533)
  • Q & A (3)
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SuperSprings Vehicle Suspension - SSR-611-40

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

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): 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-611-40 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Trucks

Installation Details SSR-611-40 Installation instructions

This Product Fits The Following Vehicles




Video of SumoSprings Solo Custom Helper Springs - Rear Axle

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for SumoSprings Solo Custom Helper Springs Review

Speaker 1: Today, we'll be taking a look at the SumoSprings Solo Line of Custom Helper Springs for the rear axle. You'll want to use eTrailer's fit guide to determine the correct kit for your vehicle. This is what our SumoSprings look like when installed. Yours may look a little different depending on your vehicle.They're gonna replace our factory jounce stops and sit right between our frame and our rear axle. So whenever we're carrying a heavy load, they're gonna give us that extra support that we need. The way our SumoSprings are gonna work is when our suspension starts to sag from the heavy load, these are gonna absorb a lot of that weight.They are gonna work independently from each other so it's gonna help with those off-center loads.

Our springs are gonna have a progressive rate to 'em. So if we have a light load, they're gonna compress softly, still giving us that comfortable ride. But the heavier load we put on 'em, the more they're gonna compress and the more firmness they're gonna have to them.Now comparing to our factory jounce stop, you can see there's a big difference in height. These are gonna give us a lot more compression, whereas our factory jounce stops are really just preventing the axle from hitting the frame.We have a water tank at the bed of our truck as a heavy load or to simulate the tongue weight of a heavy trailer or a fifth wheel. So as I take the truck through my test course, I can definitely tell that there's a load back there.

The engine doesn't seem to be strained that much, but the bumps are extremely harsh and I can definitely feel it resonating through the seat.When I come to the slalom course and I'm going through the turns, it definitely has a lot of body roll and I just generally feel like I need to slow down because it feels likes it's leaning a lot and it's not responding quickly enough to the turns.Now that we have our SumoSprings installed and I have the same load back there, when I'm driving through our course, I can immediately tell a difference. It's much of a smoother ride. Going over the bumps really doesn't feel like anything's back there and it's just a lot more comfortable.When I come into the slalom course, it definitely feels a lot more stable and it doesn't seem to sway as much side to side and it just generally feels like it wants to go faster.These are made of a durable micro cellular urethane that works in temperatures from -25 degrees to 200 degrees Fahrenheit, and resists damage caused by oils, road salts and UV rays. Compared to air bags, these are maintenance free option with no tubes to run or air pressure to maintain. Both will help level your load and provide a smoother ride.

Airbags can be adjusted to suit your needs whereas the SumoSprings are a fixed option.That completes our look at the SumoSprings Solo Line of Custom Helper Springs for the rear axle.


Customer Reviews

SumoSprings Solo Custom Helper Springs - Rear Axle - SSR-611-40

Average Customer Rating:  4.8 out of 5 stars   (532 Customer Reviews)

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.

- SSR-611-40
by:
2014 Toyota Tacoma

Satisfied with the product 828540



- SSR-611-40
by:
2014 Toyota Tacoma

Satisfied with the product 828539



- SSR-611-40
by:

Installed on my little truck, Out of sight out of mind! They do the job I needed done. No problems , easy install, good value for money. 775509



- SSR-611-40
by:

These are a great product, waaaay better than the stock ones. I can now carry the max weight in my truck without having the butt end dragging on the ground. 708220


Comments
After 1 yr these are working just as good as the day I installed them. Fantastic product.
Howard M - 09/28/2020

101551

- SSR-209-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Installed in 10 min. Easy install.Have not tried them yet.Boat is at the dealer.Will know when I pick it up. 692446


Comments
Great
Tim - 08/23/2020

97740

- SSR-117-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Perfect fit and performs great. Help a lot on rear end sag. Great price and fast delivery. 680466


Comments
Still works great.
Hubert S - 08/05/2020

96420

- SSR-610-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I've had these for 1 year now for my 2016 Tundra and they are exactly what I needed!!! I couldn't be happier! Prior to purchasing and installing these, when I towed my 2 horses with my 2 horse slant bumper pull trailer, I was concerned about cargo weight in the bed of my truck so I was limited to gear I could bring camping and hunting season with my truck. Since adding these I can pull the horses and load my truck bed to the max including horse feed, hunting gear, coolers with food you name it and my truck doesn't even squat a bit! The ride is great with a load or without and my performance off road is still fine too! These proved to be a great solution to my needs and frankly better than pricey air bags. 673850


Comments
Were glad to hear that youre pleased with your purchase. Please keep in mind that the Sumo Springs product will not increase the capacity of your rear truck axle. The tongue weight of the trailer plus the weight of the cargo carried should not exceed the trucks rear axle capacity.
-- Mike L - 07/24/2019

58178
Comments
Extremely satisfied with this product as gives me the ability to carry a heavier load with no impact to the ride of my truck including off road 4 wheeling!
Bob T - 07/23/2020

94936

- SSR-338-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Not only are the products sold by etrailer great quality but the prices and service can't be beat. One of the best places to shop online 759089



- SSF-106-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Great product. Very easy to install. I installed Sumo springs front and rear on my class C Sprinter-based RV (Winnebago View) as part of a suspension upgrade to improve handling in cross winds. The other suspension upgrades included a Hellwig rear sway bar and Bilstein rear shocks. The handling improvement was dramatic. No more sway when being passed by semi’s and much, much better handling in cross winds. I am very happy with the Sumo springs. 656765



- SSR-130-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


SumoSprings really improved the ride on my 2018 Thor Axis 24.1 It is much easier to drive the twisty roads in the mountains with this product because the motorhome does not lean as much. 610794



- SSR-207-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Sumo springs really helps on heavy load situations & helps the ride as well. Easy to install, does everything the company said & what I expected it to do. Etrailer ,their staff with their expertise & knowledge of the products as well as with tutorials , pictures & videos makes me come back to purchase products that they distribute. 698298


Comments
Good so far. It does what I expected it to do, additional support for the heavy loads I’m carrying & not noticeable when unladen.
Arthur H - 09/07/2020

98563

- SSR-307-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


This product does what it says it will do. One of the issues that I have is the difficulty to install this product. The 2020 Ram 1500 on the passengers side has a stabilizing bar that interferes installing all the nuts on the rear of the mounting plate spring. My truck supposedly has a 1 inch lift from the factory (Big Horn North Edition). I used the plastic extension as recommended in the installation instructions and even with the 1 inch factory lift, using the plastic spacer makes the spring rest on the rear axle with no load in the truck. I'd recommend to not install with the plastic spacer. The ride is much stiffer but I'm OK with that as when my trailer is attached the ride is as expected. 764466



- SSR-307-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I pull a 24 ft trailer w/ one slide out. It weighs roughly 5K (more loaded). My RAM 1500 is well balanced for the tongue weight and , of course, when not pulling, the truck drives as if the sumos were not there-which they are NOT when the weight comes off. I have noticeably more control overall. Glad to have purchased these. They were installed by Dodge dealership--no issues. A great product. 674123



- SSR-307-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


On a 2015 Ram 1500. The Sumo springs work great. I went from a loaded ride height of 35 inches to 36 1/4 inches. But the real improvement is in the ride. No longer have the squishy rear end wobble that I used to have. Combined with my weight distributing hitch my ride height improves to 37 1/2 inches. Truck is level along with my travel trailer. When I'm not loaded I don't even notice that I did anything. Still rides like factory. My only complaint is in the installation. Eight nuts with washers per spring and there is no space at all on multiple nuts to fit a so met or even a ratcheting wrench. Took about an hour in my driveway. Other than this minor inconvenience, I have to say excellent product. 347254



- SSR-307-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


The SuperSpring Solo work as advertised. They definitely help level the load when pulling my 27' camper. My only complaint is that they fit so tight (1/4" gap) between the bottom of the SuperSpring and the axle that as soon you load anything you are already using the SuperSpring. I would have preferred a little more of the oem suspension for day to day driving. 660605



- SSR-117-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Went from air springs to these and much more happier with the ride and simplicity of these over the air bags. 735203



- SSF-106-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Super fast shipping and delivery. Had them installed this morning and we're enjoying a better ride with less sway in cornering and curb transitioning. Installed on a Sprinter chassis, B+ touring van. 668030



- SSR-610-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Purchased for a Tacoma 4 dr, long bed, with a fiberglass cap. I have the TSB/recall replacement spring pack. With this set up I had a decent ride, and better support over the OEM springs, but still see that the springs provided only minimal improvement when loading in the bed say 300-500#. If so loaded (camp gear, MC gear, 2-3 persons in cab) on moderate unpaved roads the OEM springs were at max load and had we too much frame sag. WITH the addition of the SumoSpring kit I found my truck when UNLOADED handled the same, but did have less body roll in the rear. At rest the frame rail is just touching the SumoSpring and wheel well to ground is 36 1/2" with P245 tires. When LOADED as detailed above, the rear feels firmer, has less body roll, and does not sag to excess like the OEM spring pack. Very satisfied with results. A very nice enhancement at a excellent price point. Kit is simple to install and should require no regular service/adjustment. 353831



- SSR-210-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


They really make a difference. I have a truck load of tools and was it really noisy hitting bumps etc. They are a must have! 612257



- SSF-106-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


These were perfect for our E450 Dynamax Class C motorhome. They really enhanced the ride and handling. I would definitely purchase again. 718740



- SSF-106-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Can’t eat Etrailer products and service 559621



- SSR-209-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I Received the SumoSprings Solo Custom Helper Springs shipment today and installed them on my 2017 Chevy Silverado 1500 standard cab long bed truck. It took about 30 minutes to install the helpers springs. I watched the install video and read the installation instructions on the etrailer website while waiting for the shipment to arrive. They were easy to install without jacking up the truck, I laid flat on my back and slid under the truck on my garage floor and had no problems at all. After installation I hooked up my 20 ft travel trailer and went on a test drive. The helper springs made a big difference and gave a more solid stable performance with the truck while towing my 5,000 lb travel trailer. I've installed airbags on previous trucks and I believe for the money and easy installation this is the best option to improve towing performance. 725590



- SSR-338-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Installed these rear SSR-338-54 and front SSF-106-47 on my 2016 Mercedes Sprinter RV conversion (Thor Citation 24SR) Easy install. Did this myself and only had to jack up each side of the RV about 6 in. Didn't have to get the tires off the ground or removed the tires. The hardest part of the front where getting the bolts back in through the recessed hole in the suspension to bolt them in place. The rear locked right into place. Total install time about an hour. Only a short trip taken so far but sway seems to have been reduced. Will do a long trip soon to test out. 570539



- SSR-130-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Installing these babies in the morning. Very pleased with this product. 707679



- SSR-210-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


2009 Chevy Colorado 4x4. Leaf springs were getting a bit weak and $600+ to replace with a set of overload springs, so I found this. Even empty, a rough road would knock your fillings out of your teeth, so I thought I would take a chance on these. I was a bit worried about breaking a bolt getting the old bump stops off since I live in rust country and the truck is 10 years old. But came right off and the new ones installed quickly. I had removed wheels since I was also putting on a new set of Bilstein shocks on the rear. The urethane seems to be a pretty tough material that should hold up well. I did need to jack up the body of the truck about a half inch to provide the necessary clearance since the Sumosprings are significantly taller than the factory bumpstops. Even with a 1000 lb load, the truck rides smoothly over the worst of bumps, without the teeth-rattling "ker-chunks" of driving over a rough road. Delivery was fast, as usual with e-trailer.com. I am considering a set for my Chevy 3500 to tame the rear end on that when traveling unloaded... 633668


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Ask the Experts about this SuperSprings Vehicle Suspension

  • What is the Height and Diameter of the Spring in SumoSprings SSR-611-40
    The spring portion of the SumoSprings Solo Custom Helper Springs # SSR-611-40 that you referenced measures 4 inches tall x 3 inches in diameter. The bracket will add another 1-1/2 inches to the height of the spring. I confirmed these dimensions with my contact at Super Springs. Suspension enhancement, like these jounce-style springs, is vehicle specific. The difference between the 2 SumoSprings you referenced are the vehicles they are designed to fit. The # SSR-611-40 springs are...
    view full answer...
  • Recommended SumoSprings System for 2012 Toyota Tacoma Pre-Runner SR5
    I do have a solution for you, however the SumoSprings Solo Custom Helper Springs # SSR-611-40 referenced in your question is not designed to fit your Pre-Runner model of the 2012 Toyota Tacoma. For your Tacoma Pre-Runner, I instead recommend the SumoSprings # SSR-610-40. These urethane springs are confirmed to fit your truck and will do a great job of upgrading the rear suspension for improved control and comfort. Its 1,000 pound capacity will keep your truck level when hauling a heavy...
    view full answer...
  • Best Suspension Enhancement for 2006 Toyota Tacoma With Constant Load in Truck Bed
    The best option for suspension enhancement for your 2006 Toyota Tacoma, as it looks like you have a heavy load in the back of the truck, is the Timbren Rear Suspension Enhancement System # TTORXR. The reason I recommend these over the SumoSprings Solo Custom Helper Springs # SSR-611-40 is because the SumoSprings only have a 500 lb capacity, meaning they will compress to 50 percent at 500 lbs, and it looks like you may have more than that in the back of your Tacoma, so you won't get the...
    view full answer...

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Info for this part was:

Edited by:
Leah B
Video by:
Andrew K
Installed by:
Jeff D
Installed by:
Robert C
Written by:
Mary E
Updated by:
Sarah W
Updated by:
Noah M

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