SumoSprings Solo Custom Helper Springs - Rear Axle
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2018 GMC Yukon XL
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2018 GMC Yukon XL
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Heavy trailers or bed loads can make the rear end sag and throw off your handling. These SumoSprings Solo Custom Helper Springs add up to 1,400 lbs of support at 50-percent compression to keep your vehicle level and stable. They help your factory suspension handle the extra weight so your steering, braking, and headlight aim stay right where they should.
Different loads need different levels of support. These springs compress easily with lighter loads for a softer ride, then firm up as weight increases—up to 80-percent compression—to give you steady control when hauling heavier gear. You get a comfortable drive when unloaded and solid support when it counts most.
When turns get sharp or weight sits off center in the bed, each spring works on its own to support that side of the vehicle. This helps cut down body roll, keeps you more balanced through corners, and evens out the ride even when one side is carrying more weight than the other.
Road salt, oil, UV rays, and temperature swings from -25 F to 200 F are no problem for these durable microcellular urethane springs. They compress straight up and down instead of bulging out sideways, so they fit tight spaces without damage. With no airlines or air pressure to monitor, they’re totally maintenance-free—just install them and go.
Adding load support doesn’t have to be complicated. These custom-fit helper springs mount in place of your factory bump stops with simple tools—no drilling needed. In just a short afternoon, you’ll have a sturdier suspension setup that’s always ready for towing or hauling without the hassle of air systems or adjustments.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody. Andy here with etrailer.com and today we're gonna take a look at the SumoSprings rear axle solo custom helper springs. Now, these are designed to fit your 2016 and newer GMC Canyon and Chevrolet Colorado and then your 2016 and newer Toyota Tacoma. And then finally, your 2005 to 2015 Toyota Tacoma Prerunner and excluding Prerunner. Now as you know, towing or hauling a heavy load can cause rear sag as your factory suspension compresses under the weight of the load. So, 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 are making less contact with the road, which causes problems with traction, steering and braking. SumoSprings upgrade your vehicle's factory suspension to level your vehicle, improving driving performance and keeping your ride comfortable. These 1400 pound capacity helper springs provide progressive load control, meaning the more that you load them, the stiffer they become. With a lighter load, the springs will compress easily for softer 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.
These springs can also compress by as much as 80% to support a heavy rear load and to help your factory suspension bear up under the load. What this does is even out the weight, which levels your vehicle and ensures that your front tires are making better contact with the road. So, a level ride means that you have improved driving control. It ensures safe headlight aim, and it helps minimize sway. The springs can also support your factory suspension, which is going to help prevent sagging and reduces bottoming out.
These springs work independently from one another to support each side of your vehicle. This action helps reduce body roll when you make sharp turns, and this also helps to compensate for off-center loads. So, these microcellular urethane springs are tough. They're going to resist abrasion, oil, salt and UV rays, which can more quickly wear out other springs, and they're going to perform well in temperatures ranging from negative 25 degrees Fahrenheit all the way up to 200 degrees Fahrenheit. Now, these springs compress vertically with minimum expansion to the sides so they won't be damaged by nearby mechanical parts and they will fit safely into tighter spots.
And unlike air springs, these springs require no maintenance or adjustment. So, these down style springs are made here in the USA and are custom designed to fit your vehicle. They are going to install easily with the included hardware that you see here. There's not gonna be any drilling that is going to be required. And as you can see, an instruction sheet is included to walk you through the installation process step by step. Now again, as I mentioned at the beginning of our time together, the weight capacity at 50% compression is 1400 pounds, but SumoSprings will not increase your vehicle's weight carrying capacity. So, you wanna make sure that you do not exceed your manufacturer's recommended weight limit. These do have a limited lifetime warranty, and that's going to conclude our look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.
Customer Satisfaction Score:
76% were satisfied with this product
24% of customers were not satisfied
Ratings & Reviews
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.
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?
Claire H.
9/2/2026
Gwendolyn Y.
5/20/2026
Looks like you were about to head off somewhere fun, Chad!
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!
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.
Gwendolyn Y.
1/8/2026
Glad the Sumos are helping make your loads easier to tow!
Richard
2/12/2026
No issues. Towed a 27 Airstream around 4k miles & its all good.
Lazer S.
2/12/2026
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.
7/31/2025
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?
Lazer S.
9/23/2025
Albert
7/16/2025
Still working like new. So much better than the factory bump stop.
Andrew N.
10/21/2026
Hey John, thanks so much for the detailed response and photos. That really helps other folks on the page. I'm glad install went well and you're liking them! I have these sumosprings on my Nissan Titan and it's a huge upgrade for towing!
Kate F.
7/21/2026
One of my favorite things to recommend Kevin, the feedback is always so great on what a difference they make! What are you mainly towing that needed the extra support?
Mike B.
4/24/2025
Excellent, I also tow a 6x12 cargo trailer which the Sumos do a great job of maintaining a level ride. I also installed Sumos front and rear on my 32 Tiffin motorhome. It utilizes the Ford F53 chassis and I believe they compliment that chassis well. Im definitely a big Sumo fan.
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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?