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

SumoSprings Solo Custom Helper Springs - Rear Axle

Item # SS95MR
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Our Price: $254.99
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. Lowest Prices for the best vehicle suspension from SuperSprings Intl. SumoSprings Solo Custom Helper Springs - Rear Axle part number SS95MR can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (1024)
  • Q & A (13)
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SuperSprings Intl Vehicle Suspension - SS95MR

  • 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-209-47 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Trucks

Installation Details SS95MR Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

SumoSprings Solo Custom Helper Springs - Rear Axle - SS95MR

Average Customer Rating:  4.8 out of 5 stars   (1024 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.

- SS95MR
by:

The installation was a bit slower as this was a 2002 GMC Sierra 1500 and the bump stop did not have the bolt in the hollow opening. Instead, the bump stop and cup came off by removing a nut between the bracket and frame. Access to that bolt is more difficult but doable with an open end wrench. Then use the provided spacer and in my case one washer, and the provided nut and bolt to secure the spacer. The Sumo spring then simply screws on. Both fit very well leaving a gap between the spring and Axle. This installation was on a quadrasteer Denali. Very pleased with etrailer's written instructions (although a video for this vintage truck would have been great) and their delivery time.



- SS95MR
by:
2017 Chevrolet Silverado 1500

missing some parts (2 off set plate) some far not good


Comments
Thank you for bringing this to our attention. Our customer service team should be reaching out in the near future.
-- Etrailer Expert Brooke M - 09/02/2021


- SS95MR
by:



- SSR-610-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


We pull an off-road teardrop camper with our 2013 Toyota Tacoma and were looking for a little help with the rear end sag when we have that hitched plus putting some weight in the back of the truck (firewood, water, etc). Our Tacoma is lifted (2.5") but the lift kept the stock springs with an added Deaver leaf to help with the notoriously soft Toyota springs. However, with the shell and ~300 pounds of weight in the back, it still sagged, especially with another 250 lbs of tongue weight from the trailer. The Sumos have eliminated that sag, even with bigger loads in the bed, eliminated body roll (also notoriously bad with Tacomas) and didn't destroy the ride for day to day driving. There might be a slight bit more stiffness when hitting speed bumps, but definitely not bad at all. If anything, I would say it IMPROVED the ride and handling. The springs themselves were simple to install, less than half an hour start to finish. Some reviews have said they were bumping the frame after installing but we had about 1/2" gap on both sides. The only "specialty" tool would be a torque wrench capable of 90 lbs to get it to spec. We considered Firestone air bags but after talking with the reps at e-trailer, we decided on these and couldn't be happier. Reasonably priced (half the price of air bags), no maintenance, great customer service...can't argue with anything at all.


Comments
One year and working better than I imagined it would. Carrying loads in my Tacoma is no longer an exercise in fear and my shocks are way happier happier with a little help!
Barry - 08/07/2021


- SSF-106-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


We love our Sumos. They are easy to install and they helped with our sway and jouncing. Unfortunately, we just added a new rear suspension package which lifted the rear about 2 inches. Now the Sumos don’t touch the axle and won’t provide much sway damping. They act now more like a very fancy jounce bumper. Still good to know that the rear Sumos will give us extra protection should we hit a wicked pothole. Front sumos still snug against the axle and helping with sway and crosswinds



- SSR-612-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Couldn’t have been a simpler install! Total time was less than 15 minutes which included digging the floor jack out, blocking the tires and cleanup. Makes a heck of a difference in keeping the nose of the truck up when towing trailer or hauling 16 golf cart batteries.


Comments
Still awesome. A year later, have hauled up to 16 golf cart batteries with no issues due to the weight. A real help in getting the work done without the fear of bottoming out.
EV T - 08/19/2021


- SSR-207-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Good piece of gear, works great supporting my new grand design 5th wheel. Installing was easy, only information I can pass is the 2x4 was not enough to seat the spring, had to add another 1/2 piece of wood to help seat the spring inside the cup..


Comments
Great, after 1 year the spring is still doing its job. No issues no complaints
George W - 04/09/2021


- SSR-209-40
by: 05/25/2021

Review from a similar SumoSprings Solo in Vehicle Suspension


2018 silverado z71 crew cab 6'6 bed Replaced air bags with 1000# sumo springs. Do a lot of offroading and bags limited travel. With these I can use my suspension and stay level on the trip with all my gear. Nicer ride unloaded and even sweeter when loaded. Easy 40 min install if you're use to working on your own stuff. A definite upgrade.



- SSR-610-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I would have give it a 5star but the bolts are 1/4” I think it should be at least minimum of 3/8” or1/2” bolts to hold the sumo springs. I like them toed the camper handles very well. Wishi got these a long time ago worth getting. With out camper can tell that it’s there but rides ok. I wanted the same ride it not quite. I ask what the how high they are said 5” with bracket but it’s actually 6” with bracket see picture. I would recommend getting the sumo springs ssr-610-47.



- SSR-307-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


took about 45 mins to a hour to install mostly because of bolt up other wise probably 30 min install if bolt up was not in such a tight location. I did leave out the spacers which left me with about a 1 inch gap where as I had about 3 before install with OEM bump stops. I have not loaded a trailer on my truck yet but I did load around a 1000lb bail of hay right after install into the bed and you could not really see a drop in the back. Moment of truth will be when I load my travel travel which is the main reason I bought these due to sag. 2014 Ram 1500 4x4



- SSR-313-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


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.



- SSR-312-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


This is my second set of SumoSprings. The first set was on a 2020 Ram Rebel. They fit perfectly on that truck with no space between the spring and the axle. They were much more difficult to install on the Rebel. This set was much easier to install. When I ordered the springs the reviews were split on whether there would be a space between the spring and the axle. I made sure to order the correct pair for my 2021 Ram 2500. New truck for the larger trailer I’m now towing. I received the package very quickly and was surprised at how small the box was. I opened it to find the springs and all the parts in the shipping box along with the pictured instructions. I was slightly perturbed that it appeared to be a return but the parts and springs looked new so I proceeded to install. I placed the setup next to the bracket and realized there would be a space between spring and axle so I called etrailer to check if I was missing a spacer. I also was a bit worried that I ordered the wrong set since the instructions only say 2014-2017 and not 2021. I was told it was designed that way so I decided to give it a try given my experience with the Rebel and installed the springs per the instructions. Took less than 30 minutes total. I used the provided loctite on the set screw and spring. I then drove around a bit and unloaded there is no change to the rear suspension. Going over larger bumps you can tell when the spring begins to engage as there is a little rebound. I then hooked up my trailer. With 815 lbs tongue weight the springs are engaged on the axle and with my WD bars engaged the truck is back to stock rake per the zero longitude angle with the 4x4 page pulled up. I haven’t towed yet but expect it to be similar to my Rebel and I was very satisfied with that performance. I recommend them for your your truck. Especially if you have a Ram.



- SSR-114-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


So managing a travel nurse's life we tow all over the country.. The Sumo spring has helped tremendously with ride level and stability for tens of thousands of miles in this first year.. With no hassle of leaky air hoses or blown bags along your ride it is by far one of the easiest ways to help support your load!!!!



- SSF-106-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Love the product fairly easy to install. Took just about two hours for all four Sumosprings. The front was a bit more challenging and I’ve seen somewhere else about using a plastic bag that you can cut up and inserted in the 13 mm deep socket, this will keep the nut in place while threading. Your videos are very helpful and strongly suggest that you create a how too for the front replacement


Comments
Love them. Highly recommend both front and rear. Easy to install
Thomas - 10/15/2020


- SSR-307-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


These went on in an hour. They took the stress off the equalizer bars and made installation and removal of the bars much easier.


Comments
They work as promised. They’ve solve issues with towing the trailer.
Michael - 07/20/2021


- SSR-610-54
by: 01/31/2021

Review from a similar SumoSprings Solo in Vehicle Suspension


2015 Frontier Crew cab Desert Runner (purchased the yellow Sumo Springs). Easiest install ever! 18mm deep socket and long breaker bar for breaking nuts loose. Removed factory bumpstop, install sumo bracket and retighten U bolts to 58 foot pounds. After installing both brackets, lifted back of truck up 4 inches to install sumo spring with blue lock tight on bracket bolt, tighten sumo spring onto bracket and lowered truck off the jack. Overall it raised the back of my truck bed 1 inch. Ride is stiffer with no bed roll in the turns. Loaded my 24 foot travel trailer with load leveler- equalizer bars and gained 3 inches (less “squat”.) Truck is level now vs nose high (without the sumo springs). Definitely an upgrade that was needed in 2015 when I first bought the truck!!!



- SSR-312-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I just finished installing the Sumo Springs to my 2020 Ram 3500. The install was super easy. Instruction were easy to follow and the whole thing took less time than I thought. I won’t know how they perform until I pull the 5er out of storage this spring, but I am ready. My only question and the reason for 4 stars instead of 5 was I thought they would sit closer to the axle than they did, may 2” from axle and I would have liked may 1” maybe I could have used another spacer and longer flat head screw to bring it closer but we will see when I put the weight on the truck. I included picks if someone wants to give me their opinion. So far I am really happy with them.



- SS45MR
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I have a 2020 Silverado 1500 that I tow a 30 foot long 6500 pound dry travel trailer with. The stock suspension was a little soft and bouncy which made towing a bit of a white knuckle ride. I ordered the SumoSprings in hopes of helping this and I must say I think they did the trick. The install wasn't as straight forward though as the supplied spacers were not thick enough to properly space the plate that holds the spring far enough off the frame to clear the factory welded cup. Lucky for me I work at a machine shop so I turned a couple of new spacers out of aluminum the proper thickness which in my case was .700 thick compared to the supplied 1/2 inch thick. In order to use the supplied spacers I would have to rotate the mounting plate into the opening of the welded cup which put the springs in the wrong location. After all is said and done I towed with it this weekend and it was night and day. Extremely happy with the ride now and if it weren't for those spacers I would have given 5 stars. The truck still rides close to factory unloaded which is what I wanted and the springs really only come into play when the camper is attached. Nice product otherwise!



- SSR-130-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Front & Rear Sumo Springs Just installed the Sumo Springs I ordered and oh WOW!!!!! That is the finishing touches to my suspension on my 32 ft Class C on an E450 chassis and love the results. Bought our coach a year ago and installed Hellwig sway bars ( front & Rear ) Bilstien shocks and Safe T Plus Steering control and that made a huge difference to drivability but then decided to add Sumo Springs, Oh My Goodness with all that I’ve done our coach drive down the highways and byways rock solid. The sumos weren’t to difficult to install considering this ole man has had 3 back surgeries and 2 bad knees but we got it done and I was blown away on the test drive. I highly recommend the Sumo products.


Comments
Still love the Sumos, they do their job. Class C is so much more a pleasure t drive even in wind and large semi trucks passing by, barely a wiggle. I would highly recommend these on any motorhome
Joseph - 05/13/2020


- SSR-117-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Very easy to install. I had zero issues and it took me about 20 minutes. Pictures shown are a 2019 F-150 with max trailer package and zero weight in the bed. Test drive with no weight in the bed made the ride feel smoother and the back end was noticeably more muted when going over bumpy roads. Typical behavior without the sumo springs would have been a much bouncier ride.



- SSR-610-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


These Sumo springs are just what I needed for my 2012 Nissan Frontier. We (wife and I) have a A-Liner camper. We have recently replaced torsion axle with a more robust one and also went from C range to D range tires. We needed something to reduce the sag of tongue load. I was unsure about which model to choose but after speaking with friendly, knowledgeable Customer service rep I was assured the 610-40 was the proper option. Test drive went extremely well. Only minimal drop in hitch and no adverse change in ride. Very pleased! Simple to install.



- SSR-610-54
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


I tow a fifth wheel that is at the limit of what my Tundra is suppose to handle. The Sumo springs took out nearly all of the “squat” and the truck handles very well. No noticeable difference when running light.



- SSR-610-40
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Couldn’t decide between the blue and yellow springs, bought both and switch them out when I need to haul my 5500lb trailer. I have a friend with the same truck (tundra) and he got airbags. The ride in his truck is terrible when not loaded down. The yellow springs are great for towing and the blue give you a better ride, no sag when loaded down.



- SSR-117-47
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Very straight forward installation. Simple. very noticeable difference under load. Towing with the gooseneck also an improvement, looking forward to the longer road trip test. So far pleased with the product and results



- SS65FR
by:

Review from a similar SumoSprings Solo in Vehicle Suspension


Installed these today on my 2020 Silverado Z71 4WD w/3.0 Duramax. Pretty straight forward installation. Took longer to find the right length extension than to install one side. I opted to leave the supplied spacer out at this time...it has an approx. 1/2" gap at the bottom. I'll tow my boat first to see if I need to add the spacer. Boat dropped the rear end approx. 2" before adding these springs. I appreciate the option to install the spacer without needing to order one later. I will update this after I see if the spacer is needed.


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Ask the Experts about this SuperSprings Intl Vehicle Suspension

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    Between the SumoSprings and the Timbren kits for your 2015 GMC Sierra 1500 I'd go with the SumoSprings # SS95MR as the Timbrens are notoriously harsh when the truck is unloaded. That said the best option is the Roadmaster Active Suspension kits like the part # RAS54FR for if you have a non-Denali or part # RAS2611 for if you do have a Denali with the Magneride. This gives you the support of the best systems out there while improving ride quality and stability so it's definitely the best...
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    For your 2014 Chevy Silverado 1500 towing a mid-sized, 6,000 lb travel trailer, the best SumoSprings for your application are going to be the 1,500 lb capacity SumoSprings Solo Custom Helper Springs # SS95MR. These will give you the right amount of compression so you get the best support possible without having a ride that would be too stiff like the higher-rated springs would give you.
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  • Will SumoSprings Help Reduce Rear Suspension Sag With Weight Distribution Kit
    Since the pre-load on the # SS95MR SumoSprings is typically about 1/2 to 1 inch, you'd very likely get some benefit from installing the SumoSprings. You shouldn't need to readjust the hitch. The first thing I'd recommend doing is revisiting the set-up procedure for your Fastway e2 to make sure you have the proper amount of tilt in the head. Typically, increasing the rearward tilt of the ball platform will place more downward force on the spring bars which would provide more lift. This...
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  • Can Spacers be Used with SumoSprings Solo Custom Helper Springs on 2001 GMC Sierra 1500 LD
    The SumoSprings Solo Custom Helper Springs # SS95MR will be a total of 6" in height once fully installed on your 2001 GMC Sierra 1500 if you use the 1/2" spacer that is included. With the 7-1/4" clearance you measured there will a 1-1/4" gap. Your vehicle would need to sag 1-1/4" before the SumoSprings would start to engage. According to SuperSprings, no additional spacers can be used with these SumoSprings. Instead of the SumoSprings, I recommend the Roadmaster Active Suspension Custom...
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  • Which Sumo Spring Product for 2018 GMC 1500 Towing Up To 10,000 lbs
    Since the SumoSprings will be helping to support the trailer's tongue weight load, ideally you'll want to match the amount of support offered by the SumoSpring to the trailer's tongue weight. Since at most, the tongue weight of your dump trailer will be about 1500 lbs, worst case, I'd go with the 1500 lb capacity, part # SS95MR. When installed, the springs won't quite touch the rear truck axle, so they won't have any effect on your ride except when you're hauling items in the truck bed...
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  • How to Increase the Towing Capacity of a 2014 GMC Sierra 1500
    When considering increasing the towing capacity of your 2014 GMC Sierra 1500, there is something that you need to keep in mind. That is the fact that without serious upgrades to your engine and body, you cannot exceed the towing capacity of your hitch. However, it looks like the hitches made for your Sierra are rated for weight distribution systems. Using one of these can increase the load your vehicle can handle. For example, the Curt Class IV for your Sierra, part # C14006, has a tongue...
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    The Timbren Rear Suspension Enhancement System part # TGMRCK15S is a great option to help reduce sag while towing with a 2017 Chevrolet Silverado 1500 but they do have a tendency to ride rough as the material is very dense. I think the perfect option for a compromise between support and comfort are the SumoSprings Solo Custom Helper Springs part # SS95MR. These ride much smoother than Timbrens and still provide support for towing or hauling.
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    You should not be getting any bouncing in the rear of your 2018 Chevrolet Silverado 1500 when towing your 6000lb camper with 700lbs tongue weight with your Fastway e2 Weight Distribution Hitch. There are a few things I would check first before resorting to suspension enhancement. First what are the weight of the spring bars on your hitch? It is possible if you have an underrated system that it is not doing its job and causing the bouncing. Second I would go through and make sure...
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  • Which SumoSprings Fit A 2002 GMC Sierra 1500 Denali With Qudrasteer?
    I reached out to my contact at SuperSprings and the correct SumoSpring for your 2002 GMC Sierra 1500 Denali with Quadrasteer is the SumoSprings Solo Custom Helper Springs - Rear Axle # SS95MR. This will give you 1400lbs of load leveling support when you are towing or carrying a heavy payload and will not affect your unloaded ride like other suspension enhancement options. I included a video of the # SS95MR for you to take a look at.
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Daron K
Edited by:
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Employee Alex H
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