UMI Performance

UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -1in to +1in Ride Height - 250lb Spring Rate

UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -2in to -3in Ride Height - 175lb Spring Rate

UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -2in to -3in Ride Height - 225lb Spring Rate

UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -2in to -3in Ride Height - 250lb Spring Rate

The UMI bolt-in rear coilover kit provides comprehensive adjustments for ride height, spring rate, and damping, in addition to enabling trailing arm adjustments for precise calibration of the instant...

UMI 64-72 GM A-Body Rear Shock Tower Brace - Black

UMI 64-72 GM A-Body Rear Shock Tower Brace - Red

Improve handling and reduce body roll with UMI's 1965-1970 GM B-Body front sway bar. Street performance friendly 1-1/8" diameter bar controls body roll better than factory bars. Includes greaseable...

Improve handling and reduce body roll with UMI's 1965-1970 GM B-Body front sway bar. Street performance friendly 1-1/8" diameter bar controls body roll better than factory bars. Includes greaseable...

UMI’s bolt-in frame notch kit improves axle clearance on lowered trucks. The 6415 is essential when lowering more than 6″. It features strong 3/16″ laser cut steel construction, quality...

UMI’s extended length trailing arms optimize wheelbase to improve the appearance of the wheel in the wheel opening. Heavy boxed tubing and high quality polyurethane greaseable bushings make our...

UMI 78-96 GM B-Body Front & Rear Sway Bar Kit - BlackThis Part Fits:YearMakeModelSubmodel1978-1981BuickLeSabreBase1985BuickLeSabreCollector's...

UMI 78-96 GM B-Body Front & Rear Sway Bar Kit - RedThis Part Fits:YearMakeModelSubmodel1978-1981BuickLeSabreBase1985BuickLeSabreCollector's...

Add ride height and damping adjustments with a rear coilover kit on your 1978-1996 GM B-Body platform with UMI's bolt-in coilover conversion brackets with no welding required. When used with...

UMI 78-96 GM B-Body Roto-Joint Rear End Housing Replacement BushingsThis Part Fits:YearMakeModelSubmodel1978-1981BuickLeSabreBase1985BuickLeSabreCollector's...