UMI Performance 1062-R Upper Control Arm - Rear Spherical Roto-Joint S197 Mustang

The UMI Performance 1062-R rear upper control arm is a direct bolt-on replacement designed to eliminate wheel hop and dramatically improve traction on S197 Mustang chassis vehicles. This performance upgrade addresses a critical weakness in the factory 3-link rear suspension system where stamped steel control arms flex under hard acceleration and rubber bushings deflect, leading to poor traction and unpredictable handling.

Key Features:

• Spherical Roto-Joint Technology: Features a greaseable pivot ball with delrin race offering 28 degrees of unrestricted movement for bind-free operation while absorbing shock and road noise
• Premium Construction: Fully TIG welded with 4140 chromoly threaded tube adaptors and CNC-machined mounting plate from 0.250-inch thick mild steel
• On-Car Adjustable: Chromoly heat-treated adjuster allows precise tuning without removal
• Durable Finish: Brilliant powder coat finish provides long-lasting corrosion resistance
• Uses OEM Hardware: Direct replacement using factory mounting points and hardware
• Ready to Install: Ships fully assembled with Roto-Joints pre-installed

The Roto-Joint design provides superior performance compared to factory rubber or aftermarket polyurethane bushings by allowing the suspension to articulate correctly while maintaining precision handling. This eliminates flex under load, allowing better control during launches and improved cornering stability. The delrin race lining ensures quiet, smooth operation suitable for both street driving and track use including autocross and road racing.

Compatibility Note: UMI Part #1058 spacer kit (sold separately) addresses the factory oversized chassis mounting hole issue, reducing the hole from 16mm to 14mm for proper bolt fit and elimination of clunking noises during acceleration and braking.