UMI Performance

Replace the rubber factory rear end housing bushings with a polyurethane setup from UMI. Over time, rubber bushings dry rot, crack and harden, decreasing your ride quality and vehicle performance...

UMI’s rear upper control arms are high-quality, bolt-on, direct factory replacements designed to enhance rear suspension strength and traction while reducing suspension bind. Engineered for the 79-04...

UMI’s rear upper control arms are high-quality, bolt-on, direct factory replacements designed to enhance rear suspension strength and traction while reducing suspension bind. Engineered for the 79-04...

The Ford Mustang is well-known for its ability to produce high amounts of low end torque and incredible 60-foot times. It is also known for its weak rear control arm mounting points. The upper and...

Viking's specially valved double adjustable rear shocks are designed to optimize performance during auto-x and road race events. These shocks feature 19 independently adjustable compression and 22​...

If you have pushed your Mustang to the limit, whether on the track or the street, you may have encountered issues with cracked torque boxes. These reinforcements are specifically designed to...

If you have raced your Mustang aggressively, on slicks, or even on the street and especially if your car is a 5-speed, you may have cracked torque boxes. Fox bodies don't have the best chassis to...

Strip Grip Kit by UMI Performance includes everything you need to safely lower your track 60-foot times and increase track consistency. Drive you tires into the ground and be ready to launch hard...

Strip Grip Kit by UMI Performance includes everything you need to safely lower your track 60-foot times and increase track consistency. Drive you tires into the ground and be ready to launch hard...

You thought the notorious South Side Machine lift bars were done? Well, we brought them back! The UMI lift bars replace your stock control arms adding tremendous track gains while keeping your ride...

You thought the notorious South Side Machine lift bars were done? Well, we brought them back! The UMI lift bars replace your stock control arms adding tremendous track gains while keeping your ride...

UMI Performance lower control arms are expertly crafted using strong DOM steel tubing for enhanced strength, rigidity, and bushing improvement. These direct bolt-on replacements effectively reduce...