UMI Performance 1048-R Upper Control Arm for Ford Mustang - S197

The UMI Performance 1048-R is a high-performance upper rear control arm designed to replace the factory stamped unit on S197 Mustang chassis vehicles. This direct bolt-on upgrade reduces wheel hop and increases traction by eliminating the flex and deflection common in factory rubber-bushed components under hard acceleration and braking.

Key Features:

• TIG welded construction for superior strength and durability
• Heat-treated 4140 chromoly adjuster for maximum strength
• Greaseable Energy Suspension polyurethane bushings eliminate deflection
• On-car adjustment capability - no removal required for pinion angle changes
• Chromoly threaded adaptor ensures long-term thread durability
• CNC machined mounting bracket from 0.250-inch thick steel
• Durable powder coat finish available in red or black
• Reuses factory hardware for direct installation

Includes Spacer Kit (Part #1058): This kit solves the factory oversized hole problem where Ford uses a 14mm bolt and hole in the control arm, but a 16mm hole in the chassis mount. The stepped spacers reduce the chassis hole from 16mm to 14mm, eliminating slop and clunking noises during acceleration and braking. Note: Designed for OEM upper control arm mounts and aftermarket mounts with 16mm holes.

Performance Benefits: The S197 Mustang's 3-link rear suspension with panhard bar is prone to flex under hard loads. This control arm's rigid construction and polyurethane bushings provide better control, improved traction during launches, and more predictable handling. On-car adjustment allows for precise pinion angle tuning for suspension setup and correction after lowering.