UMI Performance 64-72 GM A-Body Rear Coilover Brackets Bolt In (175LB Spring Rate) - 4057-175

UMI’s bolt-in rear coilover kit allows full ride height, spring rate and damping adjustments, while trailing arm adjustment enables fine tuning of instant center. The reinforced upper mount is a...

UMI Performance 64-72 GM A-Body Rear Coilover Kit (225LB Spring Rate) - 4057-225

UMI’s bolt-in rear coilover kit allows full ride height, spring rate and damping adjustments, while trailing arm adjustment enables fine tuning of instant center. The reinforced upper mount is a...

UMI Performance 64-72 GM A-Body Rear Coilover Kit Control Arm Relocation Bolt In - 4057

UMI’s bolt-in rear coilover kit allows full ride height, spring rate and damping adjustments, while trailing arm adjustment enables fine tuning of instant center. The reinforced upper mount is a...

UMI Performance 64-72 GM A-Body Rear Control Arm Relocation Brackets - Bolt-In - 4012-B

Wheel hop or traction issues? We have the solution! Optimize your vehicle's instant center and improve forward traction by lowering the rear of the lower control arm 2", 2-3/4", or 3-1/4". These...

UMI Performance 64-72 GM A-Body Rear Control Arm Relocation Brackets - Bolt-In - 4012-R

Wheel hop or traction issues? We have the solution! Optimize your vehicle's instant center and improve forward traction by lowering the rear of the lower control arm 2", 2-3/4", or 3-1/4". These...

UMI Performance 64-72 GM A-Body Rear Lift Bar Set-Up-Weld-In - 4020-B

The UMI rear lift bars replace the factory rear control arms adding traction while not changing vehicle ride height. Lift bars work with axle torque to load the chassis of the car, forcing the rear...

UMI Performance 64-72 GM A-Body Rear Lift Bar Set-Up-Weld-In - 4020-R

The UMI rear lift bars replace the factory rear control arms adding traction while not changing vehicle ride height. Lift bars work with axle torque to load the chassis of the car, forcing the rear...

UMI Performance 64-72 GM A-Body Rear Lift Bars-Bolt-In - 4022-B

The bolt on lift bar set up from UMI requires no drilling, welding or cutting making it a true bolt on. The UMI rear lift bars replace the factory rear control arms adding traction while not...

UMI Performance 64-72 GM A-Body Rear Lift Bars-Bolt-In - 4022-R

The bolt on lift bar set up from UMI requires no drilling, welding or cutting making it a true bolt on. The UMI rear lift bars replace the factory rear control arms adding traction while not...

UMI Performance 64-72 GM A-Body Rear Lower Control Arm Relocation Brackets- Weld In - 4010

Wheel hop or traction issues? We have the solution! Optimize your vehicle's instant center and improve forward traction by lowering the rear of the lower control arm 2", 2-3/4", or 3-1/4". These...

UMI Performance 64-72 GM A-Body Rear Lower Control Arms Boxed - 4024-B

UMI’s boxed rear lower control arms are a bulletproof addition to your car. Suitable for street, strip or corner carving, these arms minimize suspension deflection for a crisp handling setup and...

UMI Performance 64-72 GM A-Body Rear Lower Control Arms Boxed - 4024-R

UMI’s boxed rear lower control arms are a bulletproof addition to your car. Suitable for street, strip or corner carving, these arms minimize suspension deflection for a crisp handling setup and...