UMI Performance 3628-R Upper Control Arms with Roto-Joints

UMI Performance 3628-R adjustable rear upper control arms are engineered for street, strip, and pro-touring applications. These premium control arms feature UMI's proprietary Roto-Joint spherical bearings that dramatically reduce suspension deflection, delivering precise handling, simplified pinion angle adjustment, and minimized wheel hop.

Key Features:

• UMI-designed Roto-Joint spherical bearings for bulletproof performance
• On-car adjustability using UMI's in-house designed CrMo adjuster
• CNC laser-cut 1/2-inch thick upper mounting pads for maximum strength
• Chrome-moly (CrMo) threaded adapters for superior thread durability
• Combination TIG and MIG welding for optimal strength-to-weight ratio
• Durable powder coat finish for long-lasting corrosion resistance
• Made in Philipsburg, Pennsylvania, USA

These heavy-duty control arms are designed as direct bolt-in replacements compatible with all rear end housings. The on-car adjustment feature allows easy tuning without removing the arms from the vehicle. Installation requires only basic hand tools and typically takes 1-2 hours. Whether you're launching at the drag strip or carving corners on a road course, UMI's 3628-R upper control arms deliver the strength and adjustability needed for serious performance applications.