Lowering Springs

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'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'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'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'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...

The UMI Performance weight jack kit for 1982-1992 GM F-Body is designed to give your classic muscle car a firm ride geared toward auto-x and road race with occasional street use. This race kit is suitable for competition and features 1050lb/in front and...

The UMI Performance weight jack kit for 1982-1992 GM F-Body is designed to give your classic muscle car a firm ride geared toward auto-x and road race with occasional street use. This race kit is suitable for competition and features 1050lb/in front and...

The UMI Performance weight jack kit for 1982-1992 Camaro and Firebird is designed to give your daily driver a medium-firm ride worthy of corner carving as well as auto-x and road race. This street/race kit is suitable for the enthusiast and features...

The UMI Performance weight jack kit for 1982-1992 Camaro and Firebird is designed to give your daily driver a medium-firm ride worthy of corner carving as well as auto-x and road race. This street/race kit is suitable for the enthusiast and features...

UMI’s performance lowering springs are built to lower the 4th Gen approx. 1.25” - 1.5” (1.25” front and 1.5” rear designed to level the car) and increase the spring rates for a crisp handling experience. UMI springs are Made in USA of 5160 CrSi wire up...

UMI Coilover Spring 2.5" x 12" x 850 lb/in - Slight barrel taper for shock clearance

UMI Coilover Spring 2.5" x 12" x 600 lb/in - Slight barrel taper for shock clearance