UMI Performance

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 ...

40+ years of moisture and abuse can leave your frame in bad shape, and unable to properly locate the body mounts. Our 14 piece kit is designed to weld-in and provide a sturdy surface and a properly...

This one-piece NHRA legal drive shaft safety loop is a bolt-in or weld-in application for the 1964-1972 GM A-body. Drive shaft loop is contoured for the A-Body floor pan and bolts or welds into...

This one-piece NHRA legal drive shaft safety loop is a bolt-in or weld-in application for the 1964-1972 GM A-body. Drive shaft loop is contoured for the A-Body floor pan and bolts or welds into...

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 adjustments, while trailing arm adjustment enables fine tuning of instant center. The reinforced upper mount is a...

UMI Performance solid sway bars are designed to reduce body roll, understeer and increase cornering capabilities resulting in a more balanced suspension. The 1.250" front sway bar is 400% more rigid...

UMI Performance solid sway bars are designed to reduce body roll, understeer and increase cornering capabilities resulting in a more balanced suspension. The 1.250" front sway bar is 400% more rigid...

Tired of looking at hammered, crusty lower a-arms with cracked ball joint bosses? UMI has the solution with brand new modern tubular lower a-arms. UMI lower A-Arms are fabricated from DOM tubing...

Rear lower control arms are a must improvement for any General Motors A-Body vehicle. Our lower control arms our designed to replace your weak, rusted, factory-stamped arms, adding strength,...

Rear lower control arms are a must improvement for any General Motors A-Body vehicle. Our lower control arms our designed to replace your weak, rusted, factory-stamped arms, adding strength,...

Improve performance and make your classic A-Body feel like a modern day muscle car with a complete set of fabricated tubular a-arms from UMI Performance. UMI's P/N 403133 upper and lower a-arm kit...