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Trailer SumoSprings are a maintenance-free suspension enhancement built to create a better journey by reducing G-force in your towable by 68%. Handmade from micro-cellular polyurethane, they are designed to remove sway, hop, & body roll while increasing overall driver control and comfort while towing.
The TSS-107-47 is designed for trailer frames with a GAWR of 5,000-8,000 lbs with the spring sitting on top of the axle tube. The Black SumoSprings shouldn’t be compressed past 65% of their original height in order to keep full memory rebound.
This product is designed to work on most trailers with the springs mounted above the axle. The factory spring plate must not be wider than 4-1/4″. Because of the varying build designs from different trailer manufacturers, there are occasionally some models that this product will not fit. For installation of Trailer SumoSprings the gap between the top of spring plate and bottom of the frame must be between 5.3″ and 6.55″.
The ride was greatly improved with the Sumo Springs on our RV.
I have not installed the item yet but the parts arrived quickly after I ordered them. I will be recommending SuperSprings to my friends.
They were fairly easy to install, between the instructions and help of other RV owners.
I had questions prior to purchasing and I got through quickly to a very knowledgeable and helpful tech. Great experience. I have not installed them yet.
Your whole towing experience will get better instantly. I installed 2 sets of these on travel trailer and has made a huge difference. Less bounce, Less sway, better towing..
Great response in question and very quick with the linc for purchasing. Thanks
First the customer service was great. Secondly the installation was easy and all parts were included. We have not tested it yet. Thank you
Easy to install.
Improved the ride 100%
Everything was great! Order was easy online. Shipping was on time and arrived in perfect condition. Highly recommend!
Improved the ride 100%.
Really took a lot of the excessive bounce out of my heavy Northpoint 377RLBH, certainly smooths out the ride.
We watched the SuperSprings video "Trailer SumoSprings reduce G-force vibration | Navistar Proving Grounds". From that video we knew we had to have a set of SumoSprings on our 5th wheel. We recently installed a set of TSS-107-47 SumoSprings on our 2022 Keystone Montana. This installation was very easy taking less than two hours for both axles. The SumoSpring kit had all we needed for each axle - springs, mounting brackets, and hardware. The results? Amazing! Our first 1,000 miles had rough roads. No longer are goods thrown around the 5th wheel. As an added benefit, the truck ride is improved. The up and down shock from the 5th wheel is substantially reduced and doesn't transfer into the cab. Excellent engineering and knowing the SumoSprings will help protect our RV investment.
5 out of 5
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Trailer SumoSprings for Trailer Axle, GAWR: 5000-8500 (Spring-Over Axle Configuration)
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