UMI Performance 93-02 GM F-Body Lowering Springs Rear 1.5in LoweringUMIs performance lowering springs are built to lower the 4th Gen rear approx. 1. 5 and increase the spring rates for a crisp handling experience. UMI rear lowering springs are Made in USA of 9254 CrSi wire in the rear and feature 200 lb in linear rear rate that reduces floating and body roll while still allowing for comfortable cruising and performance handling. Think of it as permanent sport mode! These springs work with the popular Konis and