UMI Performance 05-10 Ford Mustang Adjustable Upper Control Arm

The factory rear upper control arm on your S197 Mustang can flex and deflect under hard loads, leading to wheel hop and inconsistent handling. This adjustable upper control arm from UMI Performance is designed to replace that stock stamped piece, offering a more solid connection for improved traction and stability. It features a QA1 Chrome Moly spherical rod end with a self-lubricating Teflon/Kevlar race, allowing your suspension to articulate freely without binding, which is crucial for high-performance driving and launches.

Built with a 0.250-inch thick steel mounting bracket that's CNC machined for precise fit, this control arm is MIG and TIG welded for strength. The adjuster itself is made from 4140 Chrome Moly, heat-treated for maximum durability, and threads into a similarly strong Chrome Moly tube adaptor. This construction helps eliminate flex and deflection, translating to better control during acceleration and braking. Plus, the on-car adjustability means you can easily change pinion angles for suspension tuning or correct geometry if your Mustang has been lowered, all without needing to remove the control arm.

This is a 100% bolt-on replacement that reuses factory hardware, making installation straightforward. It's also designed to work with the included #1058 spacer kit, which addresses the common issue of an oversized hole in the chassis mount by stepping the diameter down to 14mm. This eliminates slop and prevents clunks, ensuring a tighter, more responsive feel from your rear suspension.