UMI Performance 64-66 GM A-Body Spring Kit Factory Height - 4048

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 best in the business. UMI’s springs are designed to add...

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 best in the business. Our springs are wound from 5160...

UMI Performance 78-88 GM G-Body Front 1in 70-81 F-Body 2-1/2in Lowering Spring - 3050F

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 best in the business. Our springs are wound from 5160...

UMI Performance 78-88 G-Body Lowering Spring Kit 1in Lowering - 3050

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 best in the business. Our front springs are wound from...

UMI Performance 70-81 GM F-Body Extended Coilover Mount Front - 2661

UMI p/n 2661 1970-1981 Camaro and Firebird Extended Coilover Mount is used to mount a true racing coilover into the front of your 2nd Gen. This weld-in upper coilover mount kit locates a 2-½” racing coilover in the proper location for use with our 2655...

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 decreased body roll and a lower center of gravity. These...

UMI Performance 82-92 Upper Spring Mounts for UMI K-member - 2405-R

UMI’s P/N 2405 spring perch kit is used as an upper spring mount in conjunction with our 2400 series k-member. The 2405 spring perch kit is an economical way to convert from a coil over k-member P/N 2402 or 2404.This Part...

UMI Performance 82-92 Upper Spring Mounts for UMI K-member - 2405-B

UMI’s P/N 2405 spring perch kit is used as an upper spring mount in conjunction with our 2400 series k-member. The 2405 spring perch kit is an economical way to convert from a coil over k-member P/N 2402 or 2404.This Part...

UMI Performance 82-02 GM F-Body Rear Weight Jack System 0lb Race - 2075-3-R

UMI's rear weight jacks provide ride height adjustment and excellent handling for your 3rd or 4th Gen GM F-Body. The kit includes custom wound premium race quality springs and our own unique spring perches featuring a smooth acting Torrington bearing...

UMI Performance 82-02 GM F-Body Rear Weight Jack System 0lb Race - 2075-3-B

UMI's rear weight jacks provide ride height adjustment and excellent handling for your 3rd or 4th Gen GM F-Body. The kit includes custom wound premium race quality springs and our own unique spring perches featuring a smooth acting Torrington bearing...

UMI Performance 82-02 GM F-Body Rear Weight Jack System 175lb Street - 2075-1-R

UMI's rear weight jacks provide ride height adjustment and excellent handling for your 3rd or 4th Gen GM F-Body. The kit includes custom wound premium race quality springs and our own unique spring perches featuring a smooth acting Torrington bearing...

UMI Performance 82-02 GM F-Body Rear Weight Jack System 175lb Street - 2075-1-B

UMI's rear weight jacks provide ride height adjustment and excellent handling for your 3rd or 4th Gen GM F-Body. The kit includes custom wound premium race quality springs and our own unique spring perches featuring a smooth acting Torrington bearing...