In stock


$577.99Ships in 1-2 weeks
  • Sold as a pair (left and right).
  • Maintenance-free
  • Enhances load carrying ability
  • Coil capacity increased by 15% to 30% &  2800 (lb) Rear Capacity at 50% Compression
  • Reduces and stabilizes sway
  • Improves overall driver control and ride comfort
  • Compress up to 80% of original height with full memory rebound
  • One-piece unit attached on one side used as a replacement/upgrade to factory bump stops
  • Progressive spring rate with superior damping properties
  • Made from proprietary and patented microcellular urethane
  • Will not leak or rupture
  • Never load any vehicle beyond the manufacturer’s GVWR

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.

Gary Glascock
2024-02-27 09:16:20

Can feel the difference just backing out of the driveway going over the concrete rain gutter as well as when taking turns. The van does not sway as much. Looking forward to our next camping adventure with the van loaded down.

Robert Johnson
2024-02-06 17:22:33

Easy to install

Charles Koons
2024-02-06 17:00:00

Purchased front and rear Sumo Springs to help stabilize the ride, outstanding results. Installed in less than 2 hours.

Daniel Halpert
2024-01-09 10:22:52

Super easy to install, I removed the wheel for easier access. Installing the SumoSprings was easier than taking the wheel off.

James Griffith
2023-12-19 09:19:44

Definitely helped with the sway, and increased the ride height about an inch. Ride seems to be as good as before.

Han Tunca
2023-06-13 09:52:10

Great tracking on shipping. Brought the parts over to a local shop who installed without a problem. Makes the van feel a lot more stable.

Jim Jehnings
2023-04-18 09:11:38

Quick shipping & easy install… huge improvement in handling & ride!

Nancie Ludwig
2023-04-18 09:10:51

The sumo springs were easy to install and made a great difference in the van's stability and handling.

Charles Koons
2023-03-14 09:34:26

Super easy to install and dramatic improvement in the ride.

Charles Koons
2023-03-08 09:17:07

Super easy to install with immediate results with better stability and a better ride.

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Customer Reviews

12 ratings for the K-30-009
5 out of 5

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Product Specifications

Weight 8 lbs
Dimensions 13 × 9 × 11 in
Application(s) Summary

RAM ProMaster 3500 4 X 2 (2015-2023)


Front coil capacity increased by 15% to 30%. Rear Capacity 2800 (lbs) at 50% compression.