UMI Performance

Want your American car to launch, corner and brake better? UMI Performance makes suspension and chassis parts that remove slop and flex from the original setup. Here you’ll find control arms, panhard bars, sway bars, chassis reinforcements and complete suspension kits for classic and modern muscle cars alike.

Chassis parts for American muscle cars

UMI Performance is an American brand specialising in suspension and chassis parts, particularly for GM platforms such as the Camaro, Firebird, Chevelle, G-body and Corvette, although the range also covers other popular models. The parts are developed for owners who use their car on the drag strip, at autocross or on the open road, and who want a chassis that can keep up with the engine’s power. The focus is on solid construction, straightforward fitting and adjustability.

UMI Performance’s key products

Rear control arms are a popular first purchase, because stiff arms with better bushings or rod ends give more traction and less wheel hop. Adjustable arms let you set the pinion angle, which matters when lowering or drag racing. UMI also offers panhard bars, sway bars, subframe connectors, K-members, springs and complete suspension kits. See each product for vehicle and year fitment.

Buy UMI Performance from us

We specialise in performance parts and know what it takes for a project to succeed. You get a wide selection, competitive prices and personal service if you have questions along the way. Find the UMI Performance solution for your project and take the next step towards more performance.

Frequently asked questions

What is the difference between polyurethane bushings and rod ends in control arms?

Polyurethane bushings are stiffer than rubber but still absorb vibration and suit street use well. Rod ends give even more precision and freedom of movement but can add some noise. The choice depends on how you use the car.

Do I need adjustable control arms when lowering the car?

It is often an advantage. Lowering changes the angles in the rear suspension, and adjustable arms let you correct pinion angle and axle position so the drivetrain works properly.