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$274.99Ships within 1 week

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″.

Greg McClure
2023-05-30 09:13:42

Strongly recommend. Trailer is noticeably smoother on shity Michigan roads. Installed all four in less than half hour.

Stéphane Larouche
2023-05-09 10:09:03

I am very happy about this product!

Gary Blundell
2023-05-02 09:49:17

Great product. Easy to install.

Dylan Lindsey
2023-04-18 09:09:15

Absolutely Amazing!!!!!!!!! Couldn’t believe how much better the truck rides. Makes my daily commute of 250 miles so much more enjoyable. The sumo spring are the best money I have spent so far on this truck and I have over $25,000 in upgrades on my truck. Honestly I have been telling everyone about them! Thank you for a great product and excellent customer service!! Any wait to put them on my travel trailer!

Lonnie Voelz
2023-04-04 09:35:49

Fits perfectly works great everything as advertised. Third time ordering a product from SuperSprings over the years never an issue!

Ernest Jones
2023-03-22 09:06:57

Great communication, product appears to be well made. Haven't towed RV yet, but hoping it will improve the ride for the camper.

Randy Etman
2023-03-14 09:23:51

Great product and easy install

Timothy Golden
2023-03-14 09:20:58

Quick ship, easy to work with.

Michael Mertz
2023-03-14 09:16:12

Installation was very easy with the instructions provided. The payoff these provide in the way of a smoother ride is well worth the investment.

Roger Johnson
2023-02-23 08:35:04

Fast shipping, easy install

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Customer Reviews

28 ratings for the TSS-107-47
5 out of 5

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Product Specifications

Weight 13 lbs
Dimensions 13.00 × 8.00 × 5.00 in
Application(s) Summary

Trailer SumoSprings for Trailer Axle; GAWR: 5000-8500 (Spring-Over Axle Configuration) ; Trailer Bumper Pull (2020-2023) ; Trailer Fifth Wheel (2020-2023)

Spring Diameter


Spring Height



1800 (lb) Capacity at 50% Compression