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Rear SumoSprings are a maintenance-free suspension enhancement built to create a better journey. Handmade from micro-cellular polyurethane, they are designed to reduce rear-end sag and increase load carrying ability while decreasing vibration, stabilizing sway, and softening harsh rebounds. 

The SSR-121-54 has a 2,800 lb capacity when compressed at 50%. The Yellow SumoSprings shouldn’t be compressed past 55% of their original height in order to keep full memory rebound.

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.

Benoit Gagnon-Hart
2022-12-21 12:44:04

Really satisfied by the quality and the design of your product. Complet installation as been done in 1 hours and a half without using any specialized tools. And the results is amazing. I drove a truck loaded with tools for a service company. This is exactly what my truck needed. Thanks again for your hard work and for your great service.

Rick Willis
2022-10-11 15:06:56

Installation was easy and straight forward. I really appreciated that everything was included- including the thread lock. Driving the van, it is noticeably more stable and much more controlled in corners. Not as susceptible to wind sway. Very pleased!

Steve Arr
2022-08-23 14:16:04

the difference these springs make is INCREDIBLE !!!

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Customer Reviews

3 ratings for the SSR-121-54
5 out of 5

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Product Specifications

Weight 6 lbs
Dimensions 10.75 × 7.25 × 4.5 in
Application(s) Summary

Ford Transit-150 4 X 2 (2015-2023) ; Ford Transit-250 4 X 2 (2015-2023) ; Ford Transit-350 4 X 2 (2015-2023) ; Ford Transit-350 HD 4 X 2 (2015-2023) ; Ford Transit-150 4 X 4 (2020-2023) ; Ford Transit-250 4 X 4 (2020-2023) ; Ford Transit-350 4 X 4 (2020-2023) ; Ford Transit-350 HD 4 X 4 (2020-2023)

Spring Diameter


Spring Height



2800 (lb) Capacity at 50% Compression