SumoSprings Solo Custom Helper Springs - Rear Axle
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1987 GMC Suburban
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1987 GMC Suburban
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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
Here’s my true thoughts of the blue sumo spring. Here’s the pro’s for me! Shipped and received the very next day, I got rid of the air bags that never held air. The sumo install was extremely quick. Hooked up to my food trailer and truck only went down about an inch and a quarter, much better than before! Sits about 1” off the axle so I still get a good ride, and loaded with a trailer… it still actually rode good. I’m tickled with them. Now.. the con and only con… I personally think $[XX] for two pieces of urethane and four brackets and two bolts is a horrible rip off!!! But…. LOL.. I’d buy them again!
Very easy installation. The improvement in handling is phenomenal.
2024 Z71 Silverado towing a travel trailer. Prior to these springs, the truck would bounce and sag. With the SumoSprings, truck is stable and sags less. Unloaded truck drives like factory. Easy install on my own.
The Sumo helper springs were not difficult to install (had to jack up the rear a few inches) & I really do think they have helped with steadiness in towing our camper.
Would recommend.
I have had these on my 2006 Colorado for a year, great product easy install I haul a compact tractor with bucket and tiller on a single axle trailer and the truck doesn't sag. No adverse ride quality when carrying no load definitely better than installing air shocks. Highly recommend to anyone having issues with vehicle sagging when loaded.
If you want an affordable, indestructible suspension upgrade to eliminate rear sag and towing harshness—without the maintenance head-aches of air systems—the SumoSprings Solo sourced through etrailer.com is one of the smartest weekend upgrades you can make. The installation was easy and the install video they provide on YouTube is priceless.
I’ve owned these SumoSprings for a year now and love them! I installed them on a 2016 Ram 1500 Crew Cab Outdoorsman 4x4. I tow a 7x14 aluminum cargo trailer that probably weighs 4000lbs loaded with gear. Before installing the SumoSprings my axles would almost touch my OEM bump stops and truck would sag. With SumoSprings my truck rides more evenly and is surprisingly smooth on the road. The ride quality is definitely better with SumoSprings. Less body roll in corners and an overall more confident ride. When I’m not towing I don’t even know they’re there. Awesome product!
Really solid for the money. Obviously if you plan to haul a load regularly you should upgrade springs or run bags, but these were a great temporary measure for hauling my bikes out west and back in my frontier. Easy to install and do the job well; particularly noticed the difference on rough dirt roads where in the past I would have been banging on the bump stops.
The Sumo Springs worked great in my 2022 Nissan Frontier and stopped the rear from sagging under trailer load but rode like normal unloaded. Very good product and very easy to install.
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.
I was surprised at how much of a difference these actually make. I bought them based on some videos of others using them, but wasn't sure if they would actually make much difference in my situation. I tow a 6800lb trailer with a Silverado 1500. With the tongue weight of that trailer, the rear of the truck doesn't drop all that much and I wasn't sure if replacing the bump stops was even necessary, but when I'm on roads with "heaves" and especially bridges where porpoising can be a problem, these SumoSpring certainly help. You probably won't notice some huge drastic change, but it's just enough to matter and even out the ride to a noticeable degree. Also, they're pretty easy to install (and I'm only barely handy when it comes to this stuff.)
I've never put on a easier product. I put the jack under the trailer hitch mount. Just lifted the body 1-2 inches and used a 12 mm socket . The socket removed the old ones and I hand tightened the new on. Literally took 10 minutes and a beer.
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.
I bought and installed the 1000lb Sumo Solo springs to help alleviate rear end squat on my 2024 GMC Canyon Denali when pulling my boat. My boat trailer has a long mono tongue with no weight distribution installed. The boat weighs in at about 5500lbs, the truck fender lip measures 38” high unloaded, once I dropped the hitch down on the ball and the Sumos picked up the load, the fenders measured 36.25” equating to an inch and 3/4 squat. Empty the Sumos have an apx gap of 7/8” above the frame rails. The Sumos were recommended over the Timbrens for my situation of infrequent towing with this truck and to maintain the best ride possible when not towing. So far my ride is virtually unchanged when empty and feels controlled when towing. Installation is straight forward but the instructions could be a little clearer with a diagram showing the intended location of the springs. Luckily an etrailer customer had already done the install and provided some pics so there was no question. I chose to remove the tires to have good access and I’d do it again this way. I supported the truck with a jack stand under the receiver. IMHO the proper method to locate the over frame upper clamp brackets is to push the forward clamp as far forward until it contacts the bed stiffener and you’ll be in the correct location then let all the hardware hang to position itself, tighten as required and enjoy.
Installed these right before a long road trip, and were impressed with how much the ride improved. Opted not to include the spacers, which has worked out fine. While not towing have not noticed any change to the ride, which is good. When towing the steering has a solid grip on the road now (sometimes felt a little loose before installing these) and no more issues with 'porpoising'. We drove across a several mile long bridge in the Bay Area that likely would have been a roller coaster ride previously, and had no issues. Quick and easy to install.
Put these on a Jeep Gladiator to haul a motorcycle to Sturgis. Kept everything level, good ride and stability. Highly recommend.
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.
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.
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
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.
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.
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.
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.
Great bump stop to replace oem ones
If you have the right tools and some knowledge of how automotive suspension works they are EZ to install. It took me about 2 hours to install both sides. Sumo makes a quality product and should last for years.
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