UMI Performance

UMI Performance offers one of the only on-car adjustable control arms for the rear of the GM B-Body vehicle. This rear upper control arm for the 58-64 GM B-Body is an excellent solution when...

This new replacement rear control arm mount replaces the stock control arm mount that attaches the rear upper control arm to the vehicle chassis. This item works excellent when the factory mount is...

Rear control arms are one of the most important suspension modifications that can be done to your GM vehicle. Stock control arms are on the borderline of "junk", bushing deflection and rusting...

Rear control arms are one of the most important suspension modifications that can be done to your GM vehicle. Stock control arms are on the borderline of "junk", bushing deflection and rusting...

Panhard bar hardware kit includes new hardware for installing a panhard bar on the 1958-1970 Chevrolet B-Body vehicles. Kit includes grade 8 bolts, washers and nuts. Please note, some Chevrolet...

Upper rear control arm hardware kit includes new hardware for installing one upper rear control arm in the 1959-1970 Chevrolet B-Body vehicles. Kit includes 5/8” grade 8 bolts and lock nuts...

Heavy duty sway bar bracket used to mount sway bar on trucks not normally equipped with a front bar. For stock ride height trucks as well as those using drop spindles.This Part...

Heavy duty sway bar bracket used to mount sway bar on trucks not normally equipped with a front bar. For trucks using lowering springs. 100% Made In USA.This Part...

Replace your rubber OEM rear end housing with an Energy Suspension polyurethane setup. Over years, rubber OEM bushings dry rot, crack and harden, decreasing your ride quality and performance. The...

Replace your rubber OEM rear end housing with an Energy Suspension polyurethane setup. Over years, rubber OEM bushings dry rot, crack and harden, decreasing your ride quality and performance. The...

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 ...

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 ...

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 ...

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...

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...