UMI Performance 05-10 Ford Mustang Rear Control Arm Kit

If you're looking to get a better grip on your 2005-2010 Ford Mustang, especially when launching hard, this rear control arm kit from UMI Performance is a solid option. The Mustang's rear suspension relies on a 3-link setup, and the factory arms can flex under load, leading to less predictable handling and reduced traction. This kit replaces those stock arms with well-built components designed to minimize that flex.

This kit includes a rear upper control arm and a pair of heavy-duty boxed lower control arms. They're constructed from 1/8-inch wall thickness steel tubing, welded up strong, and finished with a glossy powder coat. UMI includes greaseable polyurethane bushings, which help control suspension movement better than the stock rubber ones. The installation is a straightforward bolt-in process, using your Mustang's factory hardware.

For those looking to eliminate potential noise from the factory upper control arm mount, UMI offers an optional spacer kit (P/N 1058). This kit addresses the slight slop that can occur when a 14mm bolt is used in the factory's 16mm mounting hole, which can cause clunks during acceleration and braking. Keep in mind that most aftermarket mounts already have the correct 14mm hole, so this spacer kit is primarily for retaining the factory upper mount.