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 ...

UMI Performance 64-66 GM A-Body Lowering Kit 1in Lowering - SS203052

The UMI Performance spring and shock kit is designed to lower your car 1 inch while providing a huge improvement in handling and control. These kits feature our race quality lowering springs which...

UMI Performance 64-66 GM A-Body Lowering Kit 2in Lowering - SS203053

The UMI Performance spring and shock kit is designed to lower your car 2 inch while providing a huge improvement in handling and control. These kits feature our race quality lowering springs which...

UMI Performance 64-66 GM A-Body Spring & Shock Kit Factory Height - SS203048

The UMI Performance spring and shock kit is designed to provide a huge improvement in handling and control. These kits feature our race quality springs which provide a high performance foundation for...

UMI Performance 64-66 GM A-Body Spring Kit 1in Lowering - 4052

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 Performance 64-66 GM A-Body Spring Kit 2in Lowering - 4053

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 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...

UMI Performance 64-66 GM A-Body Spring/Shock Lowering Kit 1in Rear 250lb - AB4250-1

UMI's lowering package consists of four Viking double adjustable shocks, a hybrid front coil over spring system and either 1 or 2 inch UMI rear lowering springs. With moderately increased spring...

UMI Performance 64-66 GM A-Body Spring/Shock Lowering Kit 1in Rear 350lb - AB4350-1

UMI's lowering package consists of four Viking double adjustable shocks, a hybrid front coil over spring system and either 1 or 2 inch UMI rear lowering springs. With moderately increased spring...

UMI Performance 64-66 GM A-Body Spring/Shock Lowering Kit 1in Rear 450lb - AB4450-1

UMI's lowering package consists of four Viking double adjustable shocks, a hybrid front coil over spring system and either 1 or 2 inch lowering UMI rear springs. With moderately increased spring...

UMI Performance 64-66 GM A-Body Spring/Shock Lowering Kit 1in Rear 550lb - AB4550-1

UMI's lowering package consists of four Viking double adjustable shocks, a hybrid front coil over spring system and either 1 or 2 inch UMI rear lowering springs. With moderately increased spring...

UMI Performance 64-67 A-Body Adjustable Upper Control Arms- w/ Roto-Joint - 4039-B

UMI’s Roto-Joint adjustable rear upper control arms are a bulletproof addition to your street or pro-touring car. UMI’s Roto-Joint upper control arms are suitable for street, strip or corner...