What is the main benefit of using Roto-Joints in control arms?

UMI's Roto-Joints are spherical bearings that drastically minimize suspension deflection. This leads to a more crisp handling feel, makes adjusting your pinion angle easier, and helps reduce wheel hop during acceleration.

Can I adjust these control arms without removing them from the car?

Yes, these control arms are designed for on-car adjustment. You can easily tune your suspension settings like pinion angle while the arms are still bolted to your Mustang's rear end.

What is included with these adjustable control arms?

This listing is for a pair of adjustable rear upper control arms. They are designed as a direct bolt-in replacement for your stock arms and include the Roto-Joints and CrMo adjusters.

UMI Performance 79-04 Ford Mustang Adjustable Upper Control Arms - Roto-Joints

Specifications

Brand: UMI Performance
Part #: 1019-B
UPC: 1019-B

UMI Performance 79-04 Ford Mustang Adjustable Upper Control Arms - Roto-Joints

Name: UMI Performance 79-04 Ford Mustang Adjustable Upper Control Arms - Roto-Joints
Brand: UMI Performance
Price: 271.99 USD
Availability: InStock

$271.99

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Fits 1979-2004 Ford Mustang. UMI Performance adjustable upper control arms with Roto-Joints minimize suspension deflection for improved handling and reduced wheel hop.

Key Features

Fits 1979-2004 Ford Mustang (excluding 1999-2004 Cobra).
Features UMI-designed Roto-Joint spherical bearings to minimize suspension deflection.
Allows for on-car adjustment of pinion angle and other settings.
Constructed with CrMo (Chromoly) threaded adjusters for improved thread strength.
Built with ¼” thick CNC laser cut mounting pads and a mix of TIG and MIG welding.
Durable powder coat finish protects against the elements.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits this vehicle

Ford Mustang 1979-2004

Product Details

If you're looking to dial in the rear suspension on your 1979-2004 Ford Mustang, especially for street or pro-touring setups, these adjustable upper control arms from UMI Performance are a solid choice. They replace your stock arms and use UMI's Roto-Joint spherical bearings to significantly cut down on suspension flex. This means a more responsive feel when you're cornering and can help reduce wheel hop when you're launching the car.

What's neat about these is that you can adjust the pinion angle and other settings right while the arms are still bolted to the car, making tuning much easier. UMI builds these with a mix of TIG and MIG welding, and the mounting pads are CNC laser cut from quarter-inch thick steel for strength. The Roto-Joints themselves are paired with CrMo (Chromoly) threaded adjusters, which are known for their durability and thread strength. They come with a tough powder coat finish and are designed to bolt right into place on most rear end housings for your Mustang.

Installation is pretty straightforward, usually taking about an hour or two with basic hand tools, and they're made right here in the USA. These are a well-built upgrade if you're serious about getting your Mustang's suspension dialed in.