UMI Performance 64-72 GM A-Body 78-88 G-Body 2in Lowering Spring Rear RX Replaces OE 5758706

Replaces OE 5758706

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UMI Performance 64-72 GM A-Body 78-88 G-Body 2in Lowering Spring Rear RX Replaces OE 5758706A spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. These springs are wound from 9254 CrSi premium wire and feature a linear 130 lb in rate. The linear rate provides consistent handling characteristics which are important for Auto x and Pro Tour applications while the increase in