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A heavy front load can cause your suspension to sag and throw off steering and braking. These SumoSprings Solo Custom Helper Springs add up to 1,500 lbs of front-end support at 50-percent compression to keep your ride level and controlled. The microcellular urethane design cushions bumps and shock while helping your factory suspension handle extra weight so your front tires stay planted and your steering feels steady.
No two loads ride the same, and these springs automatically adjust to match. The progressive design compresses easily for lighter loads to keep the ride smooth and comfortable, then stiffens as weight increases—up to 80-percent compression—for added support when things get heavy. You get less bounce, sway, and harshness whether you’re rolling easy or fully loaded.
When a crosswind hits or a turn tries to push you around, each spring works on its own to keep that side of the vehicle stable. This independent action helps cut down on body roll through corners and keeps off-center loads from throwing the vehicle off balance. The result is a more planted feel on the highway or when maneuvering into tight spots.
Made from microcellular urethane that resists abrasion, oil, road salt, and UV rays, these springs are built for long-term use in all seasons. They perform reliably in temperatures from -25°F to 200°F and compress vertically with minimal side expansion so they fit safely even in tight suspension areas. There’s no tubing or air pressure to maintain—just a maintenance-free setup that quietly does its job every mile.
Adding front suspension support shouldn’t require special tools or shop time. The custom-fit jounce-style springs mount easily with no drilling needed, using straightforward hardware that fits right into place. In just a short time, you’ll have your front suspension leveled out and ready for smoother handling under any load.
Customer Satisfaction Score:
91% were satisfied with this product
9% of customers were not satisfied
Ratings & Reviews
Sumo springs helped the ride.
Made a big difference, would recommend this product. Much more stable ride. Was so satisfied with the front, did the back too and it really helped. Do both ends, you won't regret it.
Easy installation and definitely helped with front sway to some degree. Excellent product and support from E-Trailer.
Got my spring helpers and they really helped a lot. Just took 1/2 a day to install them. Just took a short test drive and everything was much quieter, with fewer rattles and no big bangs when hitting rough road. We are very pleased.
Great product and the service from Etrailer was A++++++++
Extremely fast shipping and felt like I was the only customer being helped that day would highly
Recommend and will buy from again
Thanks
Very happy with this products and what a great difference on my Holiday Rambler 2006 now i have to buy the rear one as well and the shipping was fast as well highly recommend this product and the dealer as well
I bought these for my 35ft motor home that's 19 years old. They will replace the old ones. I will post later when I can get them installed. They look great.
One year and 8,000 mi since I installed the Sumo's on the front of my 34 ft Coachmen class A motorhome with a W-22 chassis. Still one of the best suspension modifications I have done to my coach. Great improvement on bridge joints and small pot holes.
I put these up front on my Class A RV and it reduced the harshness at the bottom of the suspension stroke. I can go a bit faster with confidence on rough roads or over bumps. E trailer earned my business.
Bought these for my previous RV etrailer always ships promptly and they're great people to deal with give them a try you'll be happy you did
Ordering is always simple at etrailer.com with a very helpful product fit guide. Received product in about a week which fit my plans well. I installed the Sumo front springs and just finished a 200 mile trip from Southern CA to Central CA over our well funded and maintained highways....NOT! We have made this trip more than 20 times and this time we really noticed a difference in ride quality. I can’t wait to get the rear springs next.
on my Winnebago Adventurer 2005 that has the steer safe system on it since 2009 and new shocks in 2020 after adding the sumo springs up front this was the missing piece to great driving with this set up. no more jarring ride and rides like it has air bags. no leaning into curves and barely feel a truck passing.
These were super easy to install. Not sure they are to thank for the improvement while driving, pretty sure that would be the rear Sumo Springs that I added at the same time. But they are most likely what improved controlling the rocking in and out of driveways.
I installed a pair of these on my Newmar Kountry Star a year ago and I am really impressed with the improvement they made. After installation my motorhome is barely affected when I am passed by tractor trailers. Before the installation of the SumoSprings I was always fighting the wheel when I was being passed by large trucks.
While is was a bit of a struggle to get to the bolt location, I am glad I installed these SumoSprings Solo Custom Helper Springs - Front Axle. Overall, these help to make the RV ride quite a bit more stable and bounce less. The more stable ride allows to drive around corners a bit faster and with less sway.
Adding the SumoSprings to the front of my W24 motorhome improved the ride over some of the worst roads I have seen in PA. and NY.
Frank P.
5/31/2020
The Sumo Springs on my W-24 chassis have given me a much softer ride during the last 10,000 miles. When you are sitting right over the front axle in a motorhome, you feel every bump in the road. Sumo Springs help smooth out those bumps.
Purchasing SUMOSPRINGS from etrailer.com made it easy,
Kennika C. ensured that the product was the right one for my RV. Installation was easy took me and my wife (my hands would not fit to reach the bolt) an hour to install, took the RV for a test ride and I notice the difference right away, limiting sway, and the harshness of road bumps. If your having issues with hard road bumps shaking your RV, why wait purchase SUMOSPRINGS.
Victor
10/4/2022
Great
Victor
6/11/2023
I had severe vibration on my Right side front tire of RV, now with the new sumosprings I dont have that issue any longer easy to install and they continue to meet my satisfaction. Buy them!
Mike L.
7/12/2023
Finished installing somo springs and rear antiswaybar couple of days ago. Products seem to be of excellent quality and installation was relatively easy. Have not been able to get out on the road due to Covid-19 but hopefully will be able to travel in a couple of weeks.
Improved the ride
My old jounce numbers were rotted, these new new sumo springs from emailer made the ride better. Not much roll and better steering on our 2006 Fleetwood Bounder. I recommend them.
2007 Workhorse W22 chassis, easy install, slight KJ knuckle busting on drivers side, but patience works.
Bryan
12/30/2021
Most Excellent, great ride
Did not work like I thought they should, didn't fill the gap fully between frame and leaf spring.
These Sumo springs were a great upgrade. So easy to install, less than 20 minutes.
Deborah
4/20/2025
It was a great investment. It truly helped with the front end bouncing. I look forward to adding a set to the rear.
Very easy installation. Would be nice if they were about 2” longer to get contact sooner but they were a good replacement for the hollow stock bump stops.
I have a Workhorse W22 chassis. I installed steering dampeners and HD sway bar to reduce the "loose" steering. After installing the SumoSprings Front Spring helpers on the front end, 90% of the looseness on the front end disappeared. It is now a pleasure to drive. Very little sway from passing trucks and cross winds. I will be installing a set on the rear this year.
Claire H.
7/6/2026
That is awesome to hear! It must be such a relief to not have to put so much energy into controlling the wheel while driving now.
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John L.
12/6/2021
They were easy to install made the ride much more comfortable I think youre a great invention especially for such a low price