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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-329-47 has a 900 lb capacity when compressed at 50%. The Black SumoSprings shouldn’t be compressed past 65% 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.

Rick Allen
2024-01-02 11:58:24

We don’t drive our Revel on awful roads. We do use it on wash board, rough dirt roads. The summo springs have greatly improved the “rock and roll” tendency of our RV, thanks for a good product.

Michael Cogswell
2023-08-01 10:18:03

The combination of Sumo and SuperSpring have made a great difference in the ride quality. They have basically eliminated body roll and soaks up potholes and large road depressions like they weren’t even there. The van rides like floating clouds

Leonardo Vendola
2023-07-18 10:04:14

The ride is much more comfortable. Especially on the highway. When hitting pot holes at high speed the rear of the vehicle does not bounce. I also noticed that it has improved stability on winding highway.

2023-05-02 09:54:31

Easy install and instant, noticeable improvement in ride and handling quality

Miguel Gonzalez
2023-04-25 09:09:23

The teams help to get the product before my trip was awesome. Installation was super easy. The ride difference is amazing. Did a 1,600 mile trip right after install with 11 passengers, hauling a small trailer and loaded to the ceiling. Handling and ride was awesome!

Sam White
2022-12-14 12:40:37

Super Springs was really helpful and shipped it out quick. The ride improvement was great, feels solid and the swaying in and out of driveways has improved immensely. Just a much more solid ride.

Tracy Honea
2022-10-11 16:41:24

Order, shipping, communication was outstanding. Installation was much easier than expected. Replaced all bump stops in less than 45 minutes!

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Customer Reviews

7 ratings for the SSR-329-47
5 out of 5

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Product Specifications

Weight 4 lbs
Dimensions 10.75 × 7.25 × 4.5 in
Application(s) Summary

Dodge Sprinter 2500 4 X 2 (2004-2009) ; Freightliner Sprinter 2500 4 X 2 (2002-2016) ; Mercedes-Benz Sprinter 2500 4 X 2 (2010-2016); Mercedes-Benz Sprinter 2500 4 X 4 (2016-2023)

Spring Diameter

Spring Height



900 (lb) Capacity at 50% Compression