$199.99Ships within 1 week

In stock


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. 

SumoSprings Builder Kits are meant for use on custom applications and can be mounted in a variety of ways either on the front or the rear of the vehicle. 

Each customer will need to supply their own hardware and bracketry for the installation. We recommend using Grade 8, 3/8 hardware or similar.

The SFR-102-40 has a 1,000 lb capacity when compressed at 50%. The Blue SumoSprings shouldn’t be compressed past 70% of their original height in order to keep full memory rebound.

Mark Elkins
2023-02-03 09:18:10

Excellent products. Fairly simple to install. Very happy with results. Will very likely purchase these products for any future vehicles

Customer Reviews

1 ratings for the SFR-102-40

5 out of 5  

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Product Specifications

Weight 6 lbs
Dimensions 13.5 × 8.25 × 4.25 in
Application(s) Summary

Custom Fabrication 4 X 2 (2000-2023) ; Custom Fabrication 4 X 4 (2000-2023)

Spring Diameter


Spring Height