To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Heavy trailers, campers, or full beds can make the rear end sag and throw off handling. These SumoSprings Rebel Custom Helper Springs add up to 5,000 lbs of support at 50-percent compression to keep things level and steady. They help your factory suspension handle weight so steering, braking, and headlight aim stay where they should while towing or hauling. The progressive design means lighter loads compress easily for a soft, comfortable ride, while heavier loads get firmer support that keeps the truck from squatting.
When unloaded or on uneven terrain, the 2-piece design lets your suspension move freely for a smoother ride. Each spring mounts separately to the frame and axle, connecting only when the rear starts to sag under load. That separation means no harshness when empty but solid support when you need it. The closed-cell urethane material acts like a shock absorber, soaking up vibration and bumps so your ride stays comfortable whether you’re towing or driving unloaded.
Sharp turns and uneven loads can cause body roll that throws off stability. These helper springs work independently on each side to balance off-center loads and reduce sway through corners or crosswinds. Whether you’re hauling a camper or towing a trailer on mountain roads, the truck feels planted and controlled instead of rolling side to side.
Built from microcellular urethane, these springs are designed for real-world use in all conditions. They resist damage from oil, road salt, and UV rays and perform in temperatures from -25 F to 200 F. Minimal lateral expansion keeps them from rubbing nearby parts even in tight spaces. And because they’re maintenance-free with no air lines or compressors to monitor, once they’re bolted on you can forget about upkeep and focus on driving.
The Rebel kit comes ready with custom-fit brackets for an easy bolt-on install using standard tools. There’s no tubing to run or air pressure to set—just solid hardware that fits cleanly into place. Once installed, you’ve got lasting rear suspension support that levels loads, cuts sway, and keeps your truck riding smooth trip after trip.
Customer Satisfaction Score:
91% were satisfied with this product
9% of customers were not satisfied
Ratings & Reviews
Very easy install and product worked great. Helped most with leveling my truck while loaded with my camper. Body roll was still there but these definitely reduced it. Would definitely recommend this product.
nice improvement when 5th wheel is hooked up. maybe half inch ride height improvement. bumps and potholes are dampened nicely, not eliminated but not harsh and smoothed as should be.
The installation went very well. The ride seemed smooth.
I haven't had the springs under load, yet. I'm sure they'll perform as expected. I was not able to adjust the driver's side springs so that they align correctly. (see pic). The bottom spring does go into the top spring, but it's off enough that over time it will be an issue. Passenger side is spot-on! I have a 2024 F350 Tremor
took about 2 1/2 hours to put them on. Love them!! Trailer sits level and truck still has it's proper angle to the road!
With the new Sumo Springs my Sprinter is an amazing highway cruiser. Drives like a dream! It's a little rough on potholes, but overall a great purchase.
Ride is great unloaded. They don’t touch until you load the truck with a little weight. On a light trailer 16ft or 20ft car hauler they just touch. The ride may be a little stiffer in the rear since there isn’t much weight to keep them down or the bounce down. But it’s not bad at all. Hauling a heavy load where they get compressed the load is much more stable and the truck hauls the heavy loads MUCH better. Cheaper than air ride. No lines to run. No worry to inflate or deflate. I give them 10/10. Very nice product. If you run light loads more than heavy I would go with the blue or yellow versions. I have the 5k sumos on a 2018 Ram 3500 4x4
100% satisfied.
Still too new for me to review how the product works, but in terms of installation, I had a lot of issues with installation on my 2015 Ford F150. Everything I saw made it sound easy for self install by one person, but was pretty tough self install for me. I'm not an expert on vehicles, but generally pretty handy and I had trouble doing it by myself and took at lot of time.
Difficult parts were attaching the upper mounting bracket to the frame, and getting the bolt through a washer and into a mounting piece that I had to insert into the frame
Couple of notes. My truck is a 4x4 and the instructions said to mount the upper bracket in the bottom holes for 4x4's, but that was not possible as it wouldn't fit. After talking to manufacturer, they said it was ok to mount in the the upper holes that was supposed to be for 2wd models.
The instructions don't mention using lock tight on all nuts, but I had one the the sides come off and lost some pieces. After getting a warranty replacement, the manufacturer said to use lock tight, even though it wasn't noted on instructions man. They said in newer instructions, it adds that, but that wasn't included in the product I received
Hoping I will like the ride when I connect and use on my trailer and will reserve judgement till then
I wish I would have put on an air ride system instead. When I put my light (1750lb.)truck camper on my F250 truck, the back of the truck saggs. Not happy! I am sure the product is okay, just not what I wanted.
It’s a fantastic product and shipping was right on time. Thank you so much etrailer.
Just Installed my Sumo Rear Springs. They went in real easy on my Dodge Ram 3500. The thing that took the most time on the install was jacking up the frame 3-4" to make enough space between the axle base and top of frame to slip in the entire lower and top sections of the Sumo Springs. Once I did that, I narrowed that space by letting the frame down a little but not all the way. Just enough to catch the receiving spring and leaving a half inch gap between the two sections. This allowed me to easily rachet the bottom u-clap without a problem and keep good alighment. I know I'm going to love this product once I hitch up. No more 2' drop in the rear end once hooking up to my 15k 5th wheel. These springs are stout but no so stout I'll beat the hell out of my body when hunting the rutted roads of the great North West. Thank you Jessie for your expertise and steering me toward the perfect application to meet my pulling and off-road needs.
I put a small leveling kit in my 2500hd Silverado. I noticed afterwards towing my excavator or dump trailer I was getting some rear sag when I had my trailers loaded heavy. I considered doing air bags for the rear. Instead I installed the sumo springs. I installed them in about an hour. Very happy with them. No noticeable difference in ride quality while empty. And they keep my truck level when I’m hauling my trailers. 5 stars!
Product works very well. Only problem we had was an alignment problem on the drivers side spring. Couldn't get it completely centered top to bottom, but was close enough to still fit together.
I installed on 24 Silverado 2500hd. Install went great. They work well when towing. I haul a 32’ bumper pull camper. They help reduce the sag dramatically. When not hauling, the truck rides rougher than without them installed. That makes sense and I am happy with them. I may have went with a bit less stiffness now that I know.
Easy install
Pretty straight forward install. Easy to do
They worked out great with my camper, it only sit down 1 inch with my camper on it.
Great option for lifted off road trucks
Huge difference while towing 5th wheel. Keeps truck level and greatly improved stability. They work and easy install.
My driver said the ride in his truck improved dramatically with a loaded gooseneck trailer, we'll definitely be getting these for all of our trucks this winter
Went on easy, good instructions. Have this same brand on our rv
Do not work as advertised. Truck rode absolutely terrible after install
My ram deisel would squat an inch and a half in the back when i hooked my empty gooseneck to it. After installing Summo springs it only lowers 1 1/4 inches with a 7ton load. More stability with the truck level and wieght on steering axle. More lateral stability for the dips in the road. A must for any one hauling heavy with s 3/4 ton truck
I installed the drivers side today on my 2020 Ram 2500 with factory air bags…. I installed this as per design but it’s not lining up due to the provided offset in the lower bracket as well as the offset inability in the top bracket…. As well, even if the top bracket had the adjustment side to side that I would need to get the top and bottom to line up, the load level sensor that comes factory would be in the way for the top bracket to move sideways (towards the wheel) to make alignment true…. If you could please review my pictures and let me know if the offset will be a problem before I install the passenger side, I would greatly appreciate it…. Thanks in advance…
Spencer
Do you have a question about this Vehicle Suspension?
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Gwendolyn Y.
1/28/2025
Hey Spencer. I'm sorry to hear that you are having issues with the install. I did some digging into this and found that you may be able to shift the upper bumper brackets a bit and use different holes in the frame to shift it over a bit. I will say though, these are know to not always lined up perfectly and your vehicle may be one of these cases. If you still unhappy with the fitment, let me know, I'd be happy to help.