$299.99Ships in 1-2 weeks

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-106-40 is designed for trailer frames with a GAWR of 3,000-5,000 lbs with the spring sitting underneath the axle tube. The Blue SumoSprings shouldn’t be compressed past 70% of their original height in order to keep full memory rebound.

This product is designed to work on most trailers with the springs mounted below the axle.  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 the leaf spring and bottom of the frame must be between 6″ and 8.65″.

Please Note: SuperSprings International products are specifically designed for vehicles equipped with factory suspension. We cannot guarantee their compatibility with aftermarket products or parts. For questions about fitment on your specific vehicle, please contact us.

2024-03-19 09:03:17


William Trisler
2024-02-06 17:45:16

Easy install. Everything we’ll explained by the instructions. Had a question about registering for the warranty and Jennifer in customer service was great.

Bryan Miklich
2024-01-02 11:48:54

easy install, fit is perfect. arrived sooner than expected.

Charles Schrock
2022-11-04 11:55:25

Easy install at about 45 minutes per side all up, with taking the wheel off for ease of access.

Scott Chase
2022-06-01 16:09:13

Easy install. Improved ride.

Ted Hoefer
2020-05-27 10:35:06

easy install on teardrop trailer - trailer seems to travel/ride better = less bottoming out/higher loaded ride level = loaded ride level about 3/8 in higher - Sumo = a good company to deal with, delivered promptly & good deal/info on the phone!! = 5 star +++...

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Customer Reviews

6 ratings for the TSS-106-40
5 out of 5

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Product Specifications

Weight 8 lbs
Dimensions 10.75 × 7.25 × 4.5 in
Spring Diameter


Spring Height



1400 (lb) Capacity at 50% Compression