SumoSprings Custom Helper Springs - Rear Axle
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2024 Ram 1500
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2024 Ram 1500
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A heavy trailer or full bed can make your rear end sag and throw off handling. These SumoSprings helper springs add up to 2,800 lbs of support at 50-percent compression to keep your ride level and steady. They help your factory suspension handle the extra weight so braking, steering, and headlight aim stay predictable even when you’re towing or hauling a serious load.
Whether you’re hauling heavy or running light, the springs adjust to what you’re carrying. With lighter loads they compress easily for a softer, smoother ride. As the weight increases, they firm up—compressing by as much as 80 percent—to keep things level and under control. You get the right balance between comfort when empty and stability when loaded.
Uneven cargo or sharp corners don’t have to mean body roll or sway. Each SumoSpring works on its own side to keep the vehicle balanced through turns and crosswinds. That independent action also helps even out off-center loads so the ride feels planted whether you’re pulling a trailer or heading down a curvy road.
These microcellular urethane springs take on real-world abuse without quitting. They resist damage from oils, road salts, and UV rays and perform in temperatures from -25 F to 200 F. Minimal side expansion means they fit tight spaces without rubbing nearby parts. And because they’re maintenance-free with no tubing or air pressure to monitor, once installed you can just drive and let them do their job.
Installation is simple with no drilling required. The kit comes with two jounce-style springs, spacers, and mounting hardware so you can bolt them on using standard tools and get right back to hauling with confidence.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everyone, Steve here with etrailer.com. Today we're looking at our SumoSprings Custom Helper Springs for your rear axle. Now folks, these are a custom fit application, so I wanna make sure you're double checking our fit guide here at etrailer.com. Be sure you're get in the right parts the first time by entering your year, make, and model where it says my vehicle, and any other questions that ask you. I wanna also make you aware that sometimes these videos could be outdated, it could potentially fit newer vehicles than what's listed. Now, getting into it, helper springs are going to upgrade your vehicle's rear suspension for improved driver control and comfort.
So what they can do is keep your vehicle level when you're towing or hauling a heavy load, they help absorb bumps and shocks. They minimize that back and forth sway, and they are what's called a progressive load control mechanism, meaning these springs compress according to the weight of your cargo. So let's say you had a light load, maybe it compresses a little bit, just gives you a soft engagement so to speak, and like a less bumpy ride. But then when you have a heavier load, it's gonna give you a compression of as much as all the way down to 80% to give you that support you need. Now these also work independently side to side.
So if you have an off center load, maybe a camper in the back of the truck or a bunch of concrete or dirt or something on one side, it's gonna compensate for that by compressing individually, and it's gonna help reduce body roll during sharp turns. Now these are made of a nice durable microcellular urethane material. They're workable in ranges from negative 25 Fahrenheit all the way up to 200 degrees Fahrenheit. They will resist damage caused by oil, road salt, and UV rays. Now they give you mineral lateral expansion, meaning they compress vertically instead of the sides.
So you're not gonna easily damage these when operating these in the tight spaces under the vehicle. Now these are maintenance free. There's no tubing to run like with the air bags and those kind of things. There's no monitor put inside the cab of the truck. It's a simple one-time installation, no drilling required.
You're gonna get the spacer blocks that are already in there. I kind of pre-installed these. There's a bolt on each top here that goes straight down and it's that simple. And then from there, it's just follow the instructions to get which one's the driver versus the passenger and those kind of things. Now the weight capacity of these at 50% compression is rated at 2,800 pounds capacity. Now one last thing before we go, folks. Just remember these kind of springs and even airbags, they'd never increase your vehicle's weight carrying capacity. What they do is they are helping hold that load back to your ride height from your stock ride height. So what I tell people to do, and in our install videos, our installers tell people, before you install these, take a measurement maybe with your camper, you know, hooked up in the bed of your truck or on the tail, you know, the bumper of the truck or whatnot. Get a ride high from the ground to the underside of your fender. And then check that once you've installed these and see the difference. And I think you might be impressed with how much it brings you back up to stock height, and that's really what you're going for with these kind of products. Well, that's gonna wrap it up. I'm Steven, thanks for watching. As always, please stay safe while you're towing.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Towing a trailer with these is a dream!
These springs perform as advertised. They were easy to install on my 21 Bronco and I have not been disappointed. I've pulled a trailer from Texas to Utah multiple times with my Bronco and I have not experienced any squatting. I also haven't noticed any decline in comfort of my ride. I highly recommend if your looking for helper springs for trailering.
Super fast shipping. Sumo springs worked great on a trip pulling the boat to Canada.
They really improve the cornering, and trailer sag.
If your at all a DIY person you'll have no problem installing these helper springs.
The only reason I don't give them a five star review is that their just installed andvI want to see how they hold up.
Best customer service out there. You delivered when no one else could. Thank you!
Instructions were great, I didn't have to remove the rear wheels, I just used some 3" pieces of plywood with floor jack. The factory bolts (12mm) seemed to be better only because they had a washer as these hex socket bolts had a very small seat but I used them anyway. I wasn't sure the torque but tightened them to approximately the same torque as the bolts I removed. What worked for me was removing the lower two bolts, then slowly remove the side bolt and hold the original stops. Installing new one I needed 5mm for cushion, then 6mm for body bolts. There was sufficient locktite for two drops on all 8 bolts (good). I did this after work in the dark with a small flashlight. What worked for me is getting all the bolts into the body then tighten the side bolt almost all the way (so it could go up some more if needed, then tighten the bottom two bolts, then before finally tightening, loosen the side bolt a little (in case it needed to move), then tighten the bottom two bolts, then finally tighten the side bolt. I used what feels like about 30 ft-lbs. but no mention of torque. The instructions also told you which was driver vs passenger side, which is great to know before going under truck.
I put these on our Bronco Outer Banks to tow our teardrop off road camper. It made a huge difference in the ride and handling. Highly recommended.
I should have ordered heavier option all and all well satisfied install was ez and handling improved on my 2025 Tundra
Fast shipping! No issues.
First, the downfalls:
--Less than seven days after I ordered them, etrailer starts offering an instant rebate on them....$[XX]. I spoke to trainer before purchasing, would have been nice to know.
---Driver side bracket had some issues. Had to drill out paint on one of the holes to let the factory screw go through without stripping threads. (Quality control). Also, the driver side bracket did NOT fit easily. Took me 50 minutes of trail and error to get it to fit right. Another Quality Control issue. The passenger side took 10 minutes. Looking back, should have stopped, returned them, and reordered. Perhaps I then would have qualified for the instant rebate!
These Sumo's will be put to the test this weekend as I am hooking up the trailer and taking a small trip. If they do not, I am still awaiting a response from trainer of the30-Day satisfaction guarantee they advertise on the site. I was told they have to contact the manufacturer... While they are at it, can they clarify if the blue SumoSprings are rated at 1400 (etrailer site) or 1000 (SuperSprings International site)?
E-Trailer has been phenomenal. Communication, shipping, and price was great. Easy install. Haven’t put a heavy load on them yet, but am sure they will work as advertised. Have not noticed any difference thus far in ride quality in my ‘24 1794 Tundra.
Fairly easy to install. Says it takes about 30 minutes to install. It actually took about an hour. Fortunately, I took it to a buddy of mine shop and we used his lift. Tip remove both rear tires for easier access. Do yourself a favor and don’t attach the spacer and the shock to the bracket before install. The small side of the bracket start threat it into the frame. Give yourself enough room to turn the bracket out then install the spacer and the shock. Then continue with the other two bolts. The first bolt you put in you’ll have to hand tighten with a wrench. But if you give yourself a little pivot room, you’ll be able to install the spacer and the shock to the bracket. I bought a blue shocks, which are the shortest ones. They did help level out the truck and stopped some of forward to rear sway. Personally, I wish I would’ve bought the black shocks, which are a little bit longer. They probably would’ve performed a little bit better. But overall happy with the performance.
I just received my sumosprings for my 2025 tundra so I can’t tell how they will perform but I bought them because I have had them on my previous model tundra for about five years and they really make towing my utility trailer much better, I didn’t feel any stiffer ride on an empty truck but when loaded or hooked up to a trailer the sumo springs didn’t allow to squad as much and hard bottoming down just never happened.
Fixed the sag. No more bottoming out from bumps in the road. Cheaper and less complicated than air. A+ product!
The etrailer site helped me dial-in the exact Sumo Springs for our 24 Tundra, and deliver them exactly at the stated day, enabling us to keep our installation appointment with a local mechanic. We’re looking forward to our next trip pulling an Alliance Delta 252 RL. We’ve been using a BluOx load leveling hitch with 1,000 lb bars, that relieve most of the sag already, but looking to be more level with reduced vibration. I’ll update this post after getting some miles in.
Appreciate those videos on the etrailer site - very teachable.
Incredibly fast turn around, from order to delivery, super impressed! Overall, a pretty easy install on my 2023 Tundra, even without removing the rear tires. That said, it would have been much easier to access the area to install with the tires off, there’s no doubt about that, but it wasn’t impossible. Jacked up the rear end with a 3ton floor jack (just under 20in of travel on it), set my jack stands, and that gave me plenty of room to work with. A word of advice: MAKE SURE YOU PUT THE BOLT INTO THE SMALLER SIDE OR THE BRACKET MOUNT FIRST. If you save that one for last, the factory bolt and washer will catch on the top lip of the Sumo Spring, and you will not be able to get the angle needed to get the bolt in, resulting in you needing to remove the entire thing to fix your mistake. Ask me how I know this. After the install, I drove around to hit some bumps and dips, see how it felt unloaded, and honestly, I think it rode smoother than with the factory bump stops. Loading up and towing our 26ft bunk house 600mi over the next week, that’ll be the true test. So far so good though!
Just added a set of blue sumo springs to my 2024 Toyota Tacoma off-road. Picked up my new r-pod 22 foot travel trailer 3700 pounds yesterday. Headed home with a five hour trip no squat at all with the trailer on the back.
Items bolted right up … took maybe 15 minutes to install… will update when I hook up the boat trailer and pull it for a few miles.. from the looks of these they will do the job quite well…
Good product on my 23 Bronco 2DR would not fit in the orientation suggested with the U bolt closest to the wheel on the divers side although this orientation did work on the passenger side. Would suggest most important thing is to line up with where product is going to hit frame rail. I carry a large dirt bike on a motorcycle tongue rack. With billstiens dialed up two inches (rear) it took the two inch spacer plus one of the 1/2 inch spacers included in the kit. The description should be updated because the kit does include 4-1/2 inch spacers but if you have bigger wheels or have upgraded the stock suspension then you will need to buy the extra spacers which come in 2/4/6 inch versions. The product can be used in two ways. 1) So the read end does not sag from tongue weight. If this is your goal you need the blue part spaced to just barely touch the frame. The other usage is as bump stops which can and you may wish to leave well away from the frame on a 4WD to allow wheel articulation. My goal was to eliminate rear sag when I load the motorcycle on the rack and it achieved that purpose (450 pounds).
I am only reviewing installation so far, as I haven't put them to the test towing my boat yet. However, what could be a very easy installation...maybe 15-20 mins per side, becomes much more difficult because the bracket does not allow for the use of a ratchet for one of the screws. The bump stop is just wide enough so it blocks the hex head. Only way to handle that one screw is with a traditional or adjustable wrench, and this makes the install much more difficult and time consuming. Just another 1/4 inch adjustment and you could tighten that screw with the ratchet.
great
Package arrived intact only 5 days after ordering. Contents undamaged and well packed. On my new 2024 Toyota Tundra the installation was very simple, straight-forward and easy. In my garage I raised the rear of the truck with a floor jack, gathered my tools and started about 45 minutes after the package arrived. Took me about 20 minutes on the drivers side because I lacked any previous experience with this product. Only took about 10 minutes for the passenger side because I was more comfortable after doing the drivers side. I didn't even have to remove the rear tires. Keep in mind that I am a very mechanically inclined yet 68 year old guy laying on a creeper underneath a wet truck. The mounting brackets are very heavy-duty and thickly painted. Actually heavier duty than the originals. Bolt holes in the brackets were exact matches for my Tundra. After lowering the rear of the truck back down there is still approx. 3/4" clearance ( previous 6" clearance measured at the original factory bump-stops prior to removal) between the bottom of the Sumo helper and the axle rest. This is about the amount of clearance I was hoping for---make contact at about 5-1/2". Leaves me about 3/4" free travel during everyday, unloaded driving. Without the Sumo's my truck sagged 3" with 575 lbs camper tongue weight. Raining outside so I'm not going to hook up my camper just to measure the difference today. However, if it now sags even 1 to 1-1/2" less than before, I'll be a happy camper (pun intended).
I gave this a 5-star rating because I received everything exactly as advertised. Also because I can see how this product will absolutely make my camper-towing experiences much more pleasant and safe. And the Limited Lifetime Warranty certainly was a factor. I usually don't take time to write reviews but I was so impressed with the overall quality of this particular product and the ordering process that I felt I owe them that much as a tip.
2023 Tundra SR5 TRD Sport. Install was pretty easy, do take the tires off, makes it a lot easier. Just note that the bolts towards the back of the truck will need to be put in and started prior to the other 2 bolts due to the spring partially covering the hole. See the pics and you can see this. But I did finally tow my 9k camper with these installed and it took out the sag of the truck and the floating side to side was next to zero. And the stuff inside the camper wasn't tossed around near as much as it was without these springs installed.
These are fantastic if you tow an RV get them
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Victoria H.
4/8/2025
Thanks for your feedback Chris, this is valuable insight for future shoppers! Good to hear they're getting the job done as like you wanted. It's always nice when you don't have to spend the first few minutes at your campsite, picking up everything off the floor of your camper. Any upcoming adventures planned?