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Your cart is empty.SumoSpringsR are a patented suspension product designed to enhance load carrying ability, stabilize sway, and improve overall driver control and ride comfort. They are maintenance free, do not leak air, and do not require airlines or compressors. SumoSpringsR are manufactured in a variety of heights, diameters and densities to support multiple front and rear applications. They are manufactured from proprietary closed micro-cellular urethane providing a smooth and progressive spring rate.
Deerhuntingal
Reviewed in the United States on January 21, 2025
Put these on our 2023 Entegra Odessey 30Z E450 motorhome and went on perfectly. Did this as part of the suspension upgrade these motorhomes need in order to get the best driving experience out of them. From the factory, these will scare the bajeebuz out of you driving on the freeway! A lot of folks get one of these and don't realize the factory suspension is sub-par at best and if you put a few things into it, you will no longer be driving white-knuckled with a death grip! Do your research, add a few things like these Sumo's, trac bar in the rear, alignment by a specialist for these E450's that knows what they are doing, steering stabilizer and shocks. All of this will get you a dream drive experience if you are having second thoughts about your E450 motorhome!
R. Hamm
Reviewed in the United States on July 4, 2023
These are heavy duty and easy to install. Great directions and all the parts needed were included. I haven't driven the RV yet so can not review the drive ability.
bob
Reviewed in the United States on November 9, 2023
These greatly improved the ride on my class C RV. I tow with my RV and these made a big difference in the ride and handling. I had put sumo springs on the front and they made a big improvement. These rear Sumo springs are a worth while upgrade for the rear of the RV
Claude
Reviewed in Canada on August 14, 2022
Love the improvement in the handling of my class C motorhome. Unfortunately the ride is now very harsh on rough pavement. Should probably have chosen the black.
Bob G
Reviewed in the United States on April 24, 2022
Ordered my Sumo Springs for my 2016 E-450 Class C Thor Outlaw to help provide a smoother ride on the Hwy. Amazon had the best price. Only problem the pair I received was a prior return, even had the Amazon return label on the original box and one of the Sumos was greasy as if it was attempted to be installed. There also wasn't any paperwork work (instructions or warranty card were missing). After deciding there was no damage to the Sumos, I decided to install them instead of the hassle of returning them then having to wait for another pair. I did find a good Youtube Video which I used as a installation guide.Actually installation was fairly easy after spending time to safety lift the rear of my RV to install them. The original parts on the vehicle needed a 15mm wrench and the Sumos required a 14mm wrench. I assemble the unit prior to installation.I did call the Sumo technical helpdesk and got their advice on adding the 1 inch spacer and they said it was preference but stated more people use them than not. I did use it due to the fact I have a Class C Toy Hauler and carry a 920 pound Harley in the garage and thought it would make the rear more stable. Total time for install was about 1.5 hours.Will test drive later in the week.
MOMTO3
Reviewed in the United States on June 3, 2021
Easy to install
Rob G
Reviewed in the United States on February 23, 2021
Fast delivery, instillation was simple it took about 30 minutes. I used a 15 mm wrench, Floor jack and a jack stand. I have not road tested the rv yet and plan to update the review.
Damian
Reviewed in the United States on February 23, 2021
You will get what you expected! It will give you more traction
Haoze Yu
Reviewed in the United States on October 29, 2021
Installation is not difficult, unless the original bump stop screws are rusted and hard to remove.Importantly, this product design is terrible. The joints are weak and the angle are not correct. The ones that I installed broke into parts and the metal parts broke too. The angles between the rear spring and the axil is not perpendicular, which bended the spring while loaded and broke it.Anyway, 1 star.
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