UMI Performance UMI Performance 67-72 GM A-Body Spring Kit 2in Lowering - 4051 A 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... $319.99
UMI Performance UMI Performance 64-72 GM A-Body 78-88 G-Body 1in Lowering Spring Rear - 4050R A 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 ... $189.99
UMI Performance UMI Performance 64-72 GM A-Body 1in Lowering Spring Front - Set - 4050F A 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 ... $169.99
UMI Performance UMI Performance 67-72 GM A-Body Factory Height Springs Rear - 4049R A 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 ... $189.99
UMI Performance UMI Performance 64-72 GM A-Body Factory Height Springs Front - 4049F A 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 ... $169.99
UMI Performance UMI Performance 67-72 GM A-Body Spring Kit Factory Height - 4049 A 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... $349.99
UMI Performance UMI Performance 64-66 GM A-Body Factory Height Springs Rear - 4048R A 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 ... $189.99
UMI Performance UMI Performance 78-88 GM G-Body Lowering Spring Front 2in Lowering - 3051F A 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... $169.99
UMI Performance UMI Performance 78-88 G-Body Lowering Spring Kit 2in Lowering - 3051 A 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... $319.99
UMI Performance UMI Performance 70-81 GM F-Body Lowering Spring Front 2in Lowering - 2647F UMI’s 2nd Gen F-Body lowering springs are wound from 5160 CrSi premium wire and feature a linear 600 lb/in rate. UMI’s front springs are stiffer than stock to provide increased performance with... $169.99
UMI Performance UMI Performance 93-02 GM F-Body Lowering Springs Rear 1.5in Lowering - 2061R UMI’s 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... $149.99
UMI Performance UMI Performance 93-02 GM F-Body Lowering Springs Front 1.25in Lowering - 2061F UMI’s performance lowering springs are built to lower the 4th Gen front end approx. 1.25” and increase the spring rates for a crisp handling experience. UMI front springs are Made in USA of 5160 CrSi... $169.99
