UMI Performance

UMI's G-Body ¾” solid rear sway bar is designed specifically to excel when used in autocross or road racing applications. The G-Body chassis when coupled with the common high rate PT bar tends to...

UMI's G-Body ¾” solid rear sway bar is designed specifically to excel when used in autocross or road racing applications. The G-Body chassis when coupled with the common high rate PT bar tends to...

UMI's G-Body ¾” solid rear sway bar is designed specifically to excel when used in autocross or road racing applications. The G-Body chassis when coupled with the common high rate PT bar tends to...

UMI's G-Body ¾” solid rear sway bar is designed specifically to excel when used in autocross or road racing applications. The G-Body chassis when coupled with the common high rate PT bar tends to...

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...

UMI’s bolt-in rear coilover kit allows full ride height, spring rate and damping adjustability for your 1978-1988 GM G-Body. The upper mount reinforcement is a direct bolt-in and holds a true 2-½”...

UMI’s bolt-in rear coilover bracket kit is a complete mounting solution for your factory axle 1978-1988 GM G-Body. This race-proven lower bracket bolts in using the standard trailing arm mounting...

UMI’s bolt-in rear coilover bracket kit is a complete mounting solution for your factory axle 1978-1988 GM G-Body. This race-proven lower bracket bolts in using the standard trailing arm mounting...

UMI’s 3047 hub and bearing kit supports the UMI P/N 3046 C5 conversion brackets with a high quality Made In USA performance aluminum hub and premium bearings. The hub features 5 x 4-1/2 5 x 4-3/4...

UMI’s C5/C6 conversion kit includes laser cut UMI conversion brackets, light weight USA made aluminum hubs and premium bearings. P/N 304647 includes everything needed to adapt the C5/C6 abutment...

UMI's G-Body Anti-Roll bar is designed to help your hot rod leave the line flat and straight. The bars are manufactured from light weight 1-3/8” diameter tubular steel and feature three different...

UMI's G-Body Anti-Roll bar is designed to help your hot rod leave the line flat and straight. The bars are manufactured from light weight 1-3/8” diameter tubular steel and feature three different...

UMI's G-Body Anti-Roll bar is designed to help your hot rod leave the line flat and straight. The bars are manufactured from light weight 1-3/8” diameter tubular steel and feature three different...

UMI's G-Body Anti-Roll bar is designed to help your hot rod leave the line flat and straight. The bars are manufactured from light weight 1-3/8” diameter tubular steel and feature three different...

UMI's G-Body Anti-Roll bar is designed to help your hot rod leave the line flat and straight. The bars are manufactured from light weight 1-3/8” diameter tubular steel and feature three different...