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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-148-40 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.

2022-11-29 15:26:43

Excellent product! My Bronco don’t sag so much anymore, and I can’t notice it when not towing- drive normal, and it’s service free. Also this company got the best customer service in the business. If you have a long 14mm socket, you can install it in 30 minutes.

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Customer Reviews

1 ratings for the SSR-148-40
5 out of 5

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Product Specifications

Weight 9.00 lbs
Dimensions 11.00 × 8.00 × 5.00 in
Application(s) Summary

Ford Bronco 4 X 4 (2021-2023) ; Ford Bronco 4 X 2 (2021-2023)

Spring Diameter


Spring Height



1000 (lb) Capacity at 50% Compression