1. Vehicle Suspension
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  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-209-40
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1,000-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 SSR-209-40 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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SuperSprings Intl Vehicle Suspension - SSR-209-40

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

1,000-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): 1,000 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-209-40 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Trucks

Replaces SSR-209

Installation Details SSR-209-40 Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

SumoSprings Solo Custom Helper Springs - Rear Axle - SSR-209-40

Average Customer Rating:  4.8 out of 5 stars   (909 Customer Reviews)

1,000-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-209-40
by: 05/25/2021

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-209-40
by:

Replace the failed original bump stops today. After figuring out that I had to remove the old bump stop brackets from the top, the installation only took about 40 minutes. The back of truck used to sag quite a bit when boat was hooked up, now it only sags 1 3/4 inches. I have not hauled the boat on bumpy roads or highway speeds yet so the ride quality is yet to be determined.



- SSR-209-40
by:

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.


Comments
Excellent
Steve N - 11/14/2020


- SSR-209-40
by:
Nissan Leaf

Sumosprings are simple to install. And seem to work great. If you need a little help from squishing your leaf springs, these are great.


Comments
This is a great product for assisting your leader springs. Makes the ride a bit stiffer when empty. Air bags are a better choice, but cost a lot more too. Honestly, if your factory springs cant handle the weight, you need a bigger truck.
David - 05/28/2021


- SSR-209-40
by:
2006 Chevrolet Silverado

I installed these sumo springs on the rear of my 2006 Chevy Silverado. The installation took approximately one hour and a half from start to finish. I pulled my travel trailer having a Tongue weight of approximately 392 pounds with a 492 pound Honda scooter strapped in the bed of the truck which still did not exceed the weight rating of the truck. The bounce the truck had prior to installation was eliminated completely. I highly recommend the sumo springs for anyone needing a more stable ride with a load (sumo springs make direct contact and provide stability) or without a load ( sumo springs ride approximately 1/4 of an inch above rear end bump plate). I have had experience with air bag suspensions and they are fine too; but, with sumo springs you can, “set it and forget it” because you have no air lines to worry about air leaks and uneven load distribution due to a lack of air on either side. Thanks etrailer once again!!!!



- SSR-209-40
by:

Worked very well tamed the porpoising when towing the camper. I removed them when not camping during winter because they are a little stiff riding when truck is empty. Very easy install and removing 15 min.


Comments
Excellent still working very well would recommend to anyone looking to boost the suspension in the rear of your truck15 Silverado
Mark K - 10/24/2020


- SSR-209-40
by:

Gus W.-Great product, very easy to install. I'm towing a 5730 lb. trailer with a 1500 pickup. It swayed before and the sumo springs took care of that problem also took some of the sag out of the suspension. With the sumo springs I never have to worry about a torn air bag.I would definitely recommend this product.



- SSR-209-40
by:
Chevrolet Silverado 1500

Installed the SumoSprings Solo Custom Helper Springs on my 2020 GMC 1500 4x4 today and "Wow", what a difference. Handles like a completely different truck. No more constant bouncing over minor bumps and dips in the road. No more leaning into the turns. Didn't alter the ride height or stiffen the ride. Best money ever spent on this truck.



- SSR-209-40
by:
Chevrolet Silverado

I hated pulling my camper with my 1500 Silverado. It swerved at every puff of wind, especially when a tractor trailer would pass me. It took me maybe a half hour to install the sump springs and what a difference they've made. No swaying and I can now enjoy pulling the camper. Worth every penny!



- SSR-209-40
by:

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


Comments
Great
Tim - 08/23/2020


- SSR-209-40
by:

I received in a timely manner and was installed in minutes. Truck still squats but only 1-2”s . So far very pleased



- SSR-209-40
by:
2010 Chevrolet Silverado

My work truck (2015 Chevy Silverado 1500) is regularly loaded with 800 to 900 pounds of tools. Before installing the Sumospring the ride was kind of mushy. Now there is a nice spring to the ride, it feels like an empty truck. Installation was easy except that the 10 mm washers provided did not fit. A quick trip to the hardware store was the remedy.



- SSR-209-40
by:
2017 Chevrolet Silverado

Received excellent advice from Darren at etrailer. Based on my specific needs he recommended a low maintenance solution and less costly. Had only one installation question when product arrived. A different etrailer rep could only advise a 24 hour turn a round time to respond. Called the manufacturer to get the questioned answered to complete the install. For a 2017 Chev Silverado there is no need for the washers or the spacers for install. They will update their install instructions for newer model trucks. Would have rated a 5 if install question was addressed. Thanks Darren for your recommendation about this product. It is more preferable than a air lift system. No more sag when towing an occasional trailer.



- SSR-209-40
by:
2014 Chevrolet Silverado 1500

I giving a 5 star rating and haven't installed yet. All the help I received from etrailer was terrific, plus all the reviews were a big help, plus I have bought from them before info was great shipping very fast, and carry quality products. Will definitely purchase from etrailer in the future.



- SSR-209-40
by:
2006 Chevrolet Silverado

Excellent product, the install instructions to me where confusing. I am an experienced suspension person. End of the day I installed for best fit and was satisfied. Price was right and ride was great after install. Have not had time to experience with tow but am not concerned.



- SSR-209-40
by:

Works great easy to install, trailer rides level just like I wanted.



- SSR-209-40
by:
2013 Honda Fit

Works great, easy install, quick ship by etrailer.



- SSR-209-40
by:
2014 Chevrolet Silverado 1500

They're working great.



- SSR-209-40
by:
2018 GMC Sierra 1500

Easy to install and does a great job.



- SSR-209-40
by:

Fit was great and super easy to install. They work really good.



- SSR-209-40
by:
2017 Chevrolet Silverado 1500

Great product, well worth the money.



- SSR-209-40
by:

Very happy with them.



- SSR-209-40
by:



- SSR-209-40
by:
2018 GMC Sierra 1500



- SSR-209-40
by:


27
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Show More Reviews

Ask the Experts about this SuperSprings Intl Vehicle Suspension

  • Solution for Soft Rear Suspension of 2019 Chevy Silverado When Towing With Weight Distribution
    The problem you are having is pretty common with newer 1/2 ton trucks. Due to consumer complaints about the harsh ride, the manufacturers have made the rear suspension more supple which is fine unless you're trying to tow. A product like the easy to instsall SumoSprings # SS65FR would very likely be a good solution for you, but you'll need to take a measurement to determine if they'd work for you. The SumoSpring # SS65FR is about 5 inches tall, or 6 inches tall if the included 1 inch...
    view full answer...
  • Suspension Enhancement for 2018 Chevrolet Silverado 1500 Towing Forest River Wildwood Travel Trailer
    I recommend the SumoSprings Solo Custom Helper Springs # SSR-209-40 since you are already using a weight distribution hitch for load leveling. These will help to absorb bumps and suspension shock giving you a more cushioned ride. With this type of suspension enhancement you won't need to worry about air pressure like you will with air bags, and they are progressive so they will firm under heavier loads providing you more support.
    view full answer...
  • Install Video for SumoSprings Solo Custom Helper Springs SSR-209-40 on GMC Sierra 1500
    There is an installation video for you to check out on a GMC Sierra 1500 of the SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-209-40. I have added a link below to this video, as well as a link to the instructions for you. The video is on a Chevy Silverado, which is the same thing so the install will be the same as on your truck.
    view full answer...
  • Suspension Enhancement Recommendation for 2010 Chevrolet Silverado Towing Camper
    To provide some extra help to your 2010 Chevrolet Silverado 1500's suspension, the Custom Helper Springs Kit # SSR-209-40 will work well for you. These microcellular urethane springs add support to your existing rear suspension and improve the handling and overall ride of your truck. These helper springs will also help extend the lift of your truck's suspension by giving the leaf springs extra support when needed, such as when you are towing your trailer. These springs offer a custom fit...
    view full answer...
  • Helper Springs and Weight Distribution for a 2009 Chevy Silverado 1500 4x4 and KZ Sportsman 241 RLLE
    I did some checking and the SumoSprings # SSR-209-40 do indeed fit the 4x4 models of the 2009 Chevy Silverado 1500. These will be a great option to supplement your weight distribution system and they will not be as stiff as other similar products like you said. If your tongue weight is over the capacity of the system then that is also part of the sagging problem you are having. For 700 to 800 pounds of tongue weight plus the weight of anything carried in the truck bed behind the rear...
    view full answer...
  • How To Level A Trailer Load On A 2014 Chevrolet Silverado While Using A 5th Wheel Trailer
    I have a great option that will help level the rear of your 2014 Chevrolet Silverado while towing without affecting the ride quality. For this, you will want to use a set of jounce springs. I recommend using the SumoSprings Custom Helper Springs Kit part # SSR-209-40. The SumoSprings are a great way to level the load on a vehicle without compromising quality as they are made of a light duty polyurethane that is designed to support the added weight of the load over the rear axle while...
    view full answer...
  • Can Offset Bracket of SumoSprings # SSR-209-40 Face Inside Instead of Rear on 2018 Silverado 1500
    You definitely can orient the offset brackets of the SumoSprings Solo Custom Helper Springs # SSR-209-40 so that they fit better on your 2018 Chevrolet Silverado 1500. It will not cause any stress on your frame. I confirmed this with my contact at Super Springs.
    view full answer...
  • SumoSpring Rear Axle Recommendation for 2017 Silverado 1500
    For your truck setup and trailer tongue weight of 700-lbs or less I would go with the 1000-lb Super Springs kit, part # SSR-209-40, which is the one you referenced in your question. These will engage with enough resistance to give you load support for leveling the rear without making the ride quality too harsh. An install video and written instructions are linked for you.
    view full answer...
  • Suspension Enhancement Recommendation for 2009 Chevy Silverado Smoother Ride Quality than Timbren
    Timbren's do tend to have a somewhat harsh unloaded ride quality. The SumoSprings part # SSR-209-40 would give you a much smoother ride quality and would still give you the needed support when loaded. I attached an install video for more info for you to check out as well.
    view full answer...
  • Ride Height of the Sumo Springs Solo Custom Helper Springs
    By design, the Sumo Springs Solo Custom Helper Springs, part # SSR-209-40, don't normally affect your ride height. However, there are some applications where there will be contact with the springs just because of the distance from the frame to the suspension. In these cases, there will be a little bit of rear ride height added. That being said, there's always significant improvement to rear ride height when loaded enough to engage the springs, as the springs get more solid as you add...
    view full answer...
  • Recommended Air Helper Springs for 2018 Chevy Silverado 1500 Z71
    The air helper springs I strongly recommend for your 2018 Chevy Silverado 1500 Z71 are the SumoSprings Solo Custom Helper Springs # SSR-209-40 because they offer your truck the best combination of ride enhancement and durability. The SumoSprings will compress while under a load but do so progressively and independently on each side. What this means is that you will not only continue to have a centered load but your truck won't immediately have a bumpy ride with a lighter load because...
    view full answer...
  • Cost Effective Suspension Enhancements for a 2012 GMC Sierra 1500
    The Custom Helper Springs Kit part # SSR-209-40 cannot be returned once installed. If you take them out of the box and physically inspect them to determine they are not to your liking then you can return them if you pay return shipping but again, they cannot be returned once installed. I would actually suggest a different product to help with rear end sag which are also both easy to install and cost effective. For this, I recommend the SumoSprings Solo Custom Helper Springs part # SSR-207-47...
    view full answer...
  • Should there be a Gap Between Axle and SumoSprings on 2018 Chevy Silverado 1500
    It isn't uncommon to have some space between the SuperSprings # SSR-209-40 and the strike plate they make contact with when under load. Many of the installations shown in the instructions, linked for reference, also show a gap. You can close that gap a little by using the urethane spacers that came with the kit.
    view full answer...
    Image 1 for
  • Rear Helper Springs for a 2002 GMC Sierra 4x4 1500 LD Extended Cab
    The ideal way to prevent rear end sag when towing a trailer is to use weight distribution. Helper springs are designed for loads carried in the truck which is why they aren't the best option for this situation. But I will give you both options. First since you are interested in helper springs we can look at those first. The SumoSprings # SSR-209-40 could work but the trailer, if heavy enough, could still cause squat. A stiffer systems such as Timbren springs # TGMRCK15S (for the 3-door...
    view full answer...
  • Recommendation for Leveling 2008 Chevrolet Silverado 1500 4x4 When Towing Travel Trailer
    The only SumoSprings we offer that are confirmed to fit your truck are the Super Springs SumoSprings Custom Helper Springs Kit # SSR-209-40, that you referenced. These jounce-style suspension enhancement springs are designed to help level your truck while also preventing sag and working to reduce bottoming out. The best solution I recommend to keep your truck level while towing is a weight distribution system. A weight distribution system will help distribute the trailer's tongue weight...
    view full answer...
  • SumoSpring Helper Springs for a 2012 GMC Sierra 1500 4x4
    For the SumoSprings # SSR-209-40 for your 2012 GMC Sierra 1500 4x4 the springs will reach their 1,000 pound capacity at 50 percent compression. That means that there could still be some squat until the spring compress enough to stop it. But at the same time you are using weight distribution which will also work to prevent sag. So when all is said and done the 1,000 springs should do the trick.
    view full answer...
  • Is Unloaded Ride Affected When Using SumoSprings on 2009 GMC Sierra 1500
    The SumoSprings Solo Custom Helper Springs # SSR-209-40 will not affect the ride much on your 20098 GMC Sierra 1500 when you are not towing or it is not under a load. It will create a bit of a stiffer ride so while you will likely notice it some, the springs are still a good option for occasional towing.
    view full answer...
    Image 1 for
  • Is It Okay for the SumoSprings To Sit On the Axle With Truck Unloaded
    The SumoSprings Solo Custom Helper Springs like part # SSR-209-40 can be in contact with the jounce spring contact point without a load present. Depending on which kit you have, there is sometimes a spacer that will allow you to have either a slight gap or the spring will be in contact with the contact point. The presence of a gap or lack thereof is usually explained in the instructions for your exact kit.
    view full answer...
  • Best Way to Improve Ride of 2018 GMC Sierra 1500 With MagneRide Suspension
    While the SumoSprings Solo Custom Helper Springs # SSR-209-40 are a good option for your 2018 GMC Sierra 1500 Denali with MagneRide suspension, and they won't harm the ride when you are towing, there is a better option for your truck. The best way to improve your overall ride is with the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit # RAS2611. This kit will fit your Denali with the MagneRide suspension, and is going to not only help improve your ride quality when...
    view full answer...
  • Suspension Enhancement Recommendation for a 2003 Chevy Silverado with Camper in Bed
    If I were you I would go with a jounce style suspension enhancement like part # SSR-209-40 instead of the air kits. The air kits work well but they require constant monitoring of air pressure and have slightly more difficult installs. The SuperSprings also tend to have a smoother unloaded ride quality than the Timbrens that are very popular as well.
    view full answer...
  • How to Help a 2018 GMC Sierra 1500 with Rear End Sag
    In order to help keep the rear end of your 2018 GMC Sierra 1500 from sagging while towing or hauling your four wheeler I recommend using the SumoSprings Solo Custom Helper Springs part # SSR-209-40. This spring will replace the factory jounce spring that you have on your truck and provide you with a cushion between the frame and rear axle that will help to alleviate some of the rear end sag you have while towing or hauling. The best option about this system is that it will not affect ride...
    view full answer...
    Image 1 for
  • Will installation Of SumoSprings On 2007 Chevrolet Silverado Increase The Truck Height
    When the SumoSprings Custom Helper Springs Kit, part # SSR-209-40 is installed on your 2007 Silverado, it does not provide any lift for your truck. There should be a small gap between 1/2 and 1-1/2 inches from the bottom of the SumoSpring to the axle. When a load is placed in the back of your truck it will make the bed lower and the springs will provide extra support and help make the ride smoother.
    view full answer...
  • SumoSpring Suspension Enhancement Recommendation for 2011 Chevy Silverado
    For a 2011 Chevy Silverado 1500 towing a 3,200 lb boat and trailer I'd go with the SumoSprings part # SSR-209-40 as it provides an additional 1,000 lbs of suspension support. I attached an install video for this as well. You might think that the higher the spring capacity the better but if you go too high you end up with a very rough ride.
    view full answer...
  • Extra Ride Support for 2006 GMC Canyon 4WD Towing Trailer
    Helper springs kits are designed to suspend weight carried in the cargo area of the vehicle, such as your truck bed. If you're towing a trailer and want to counteract rear end squat caused by the tongue weight of a trailer being applied to the hitch, a weight distribution system would be a more effective choice. To choose a weight distribution system, you'll need to first determine the fully loaded and ready to tow tongue weight of your trailer. To that figure, add the weight of any...
    view full answer...

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