Products

Replace the rubber factory rear end housing bushings with a polyurethane setup from UMI. Over time, rubber bushings dry rot, crack and harden, decr...

Replace the rubber factory rear end housing bushings with a polyurethane setup from UMI. Over time, rubber bushings dry rot, crack and harden, decr...

UMI’s rear upper control arms are a direct factory bolt in replacements designed to add strength and traction improvements. UMI’s Rear control ...

UMI’s rear upper control arms are a direct factory bolt in replacements designed to add strength and traction improvements. UMI’s Rear control ...

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 wea...

Viking’s specially valved double adjustable rear shocks feature 19 independently adjustable compression and 22​ rebound settings for a total of...

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 ...

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 add...

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 add...

UMI Performance lower control arms our designed to replace your weak, rusted, factory-stamped arms, adding strength, rigidity and bushing improveme...

UMI Performance lower control arms our designed to replace your weak, rusted, factory-stamped arms, adding strength, rigidity and bushing improveme...

Replace your weak factory stamped lower control arms with UMI's heavy duty tubular adjustable setup. These direct bolt-on replacements minimize whe...

Replace your weak factory stamped lower control arms with UMI's heavy duty tubular adjustable setup. These direct bolt-on replacements minimize whe...

The stage 1 Strip Grip Kit by UMI Performance includes everything you need to safely lower your track 60-foot times and increase track consistency....

The stage 1 Strip Grip Kit by UMI Performance includes everything you need to safely lower your track 60-foot times and increase track consistency....

This complete kit includes (1) set of UMI Performance single adjustable lower control arms and (1) set of UMI’s "on-car" double adjustable upper ...

This complete kit includes (1) set of UMI Performance single adjustable lower control arms and (1) set of UMI’s "on-car" double adjustable upper ...

This complete kit includes (1) set of UMI Performance adjustable lower control arms and (1) set of fixed length non-adjustable upper control arms. ...

This complete kit includes (1) set of UMI Performance adjustable lower control arms and (1) set of fixed length non-adjustable upper control arms. ...

USA Standard Gear Ring Gear & Installation Kits are an easy way to re-gear a differential with one simple part number. The kits package a ring ...

USA Standard Gear spider gear kits feature high quality materials and superior manufacturing techniques to produce a longer lasting spider gear set...

USA Standard Gear spider gear kits feature high quality materials and superior manufacturing techniques to produce a longer lasting spider gear set...

USA Standard Gear spider gear kits feature high quality materials and superior manufacturing techniques to produce a longer lasting spider gear set...

USA Standard Gear Master Overhaul Kits provide all of the necessary parts for a differential overhaul in one simple part number. Save time and mone...