Products

1978 - 1981 Buick Century, 1978 - 1987 Buick Regal, 1979 - 1985 Buick Riviera, 1978 - 1981 Cadillac DeVille, 1979 - 1985 Cadillac Eldorado, 1981 - ...

4140 Chromoly Hex Adjuster. 4-1/2″ Length, 1-3/4″ threads. No jam nuts included.This Part Fits: Year Make Model Submodel 1967 Buick Gran Spo...

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 ...

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 ...

UMI’s high durometer polyurethane bushings replace the factory rubber rear end housing bushings. After many years of weather and abuse the factor...

UMI’s high durometer polyurethane bushings replace the factory rubber rear end housing bushings. After many years of weather and abuse the factor...

The UMI P/N 2999 adds the finishing touch to allow full articulation of the GM 4-link rear suspension. By using 2999 and either Roto-Joints or rod ...

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 contr...

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 contr...

Don't reuse your old rusty bolts when installing aftermarket control arms when you can replace them with new ones. Our kit includes all new hardwar...

Adjustability is one the most important things when tuning in ...

Adjustability is one the most important things when tuning in ...

The UMI Performance lift bars replace your stock rear control arms adding tremendous track gains while not effecting ride height and keeping ride...

The UMI Performance lift bars replace your stock rear control arms adding tremendous track gains while not effecting ride height and keeping ride...

UMI's boxed lower control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The boxed contro...

UMI's boxed lower control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The boxed contro...

UMI's boxed lower control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The boxed contro...

UMI's boxed lower control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The boxed contro...

UMI's double adjustable lower control arms utilize our Roto-Joint technology for a bind free performance, quiet ride quality, and also offer on c...

UMI's double adjustable lower control arms utilize our Roto-Joint technology for a bind free performance, quiet ride quality, and also offer on c...

UMI's tubular lower control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The Roto-Joint...

UMI's tubular lower control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The Roto-Joint...

UMI's tubular upper control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The Roto-Joint...

UMI's tubular upper control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The Roto-Joint...