UMI Performance 3661-R Upper Control Arm GM Rear Suspension

The UMI Performance 3661-R is a high-performance upper control arm designed for GM vehicles with 3-link or 4-link rear suspension configurations. Engineered to replace weak factory stamped steel components, this control arm dramatically improves traction, handling, and overall suspension performance.

Construction Features:

• 1.750-inch diameter x 0.120-inch wall DOM (Drawn Over Mandrel) mild steel tubing for superior strength
• CNC-machined bushing holders ensure precise fitment and alignment
• TIG welded construction for maximum durability
• Durable powder coat finish resists corrosion and wear

Performance Upgrades:

• Greaseable Energy Suspension polyurethane bushings eliminate deflection and maintain consistent geometry
• Reduces wheel hop and improves launch consistency for drag racing
• Enhanced cornering stability and predictable handling characteristics
• Direct bolt-on replacement requiring no modifications

This control arm is ideal for street performance vehicles, drag racing applications, and restoration projects. Note that this item is sold individually—six-cylinder and most small block GM vehicles typically use a 3-link rear suspension with one upper control arm, while big block vehicles use a 4-link setup with two upper control arms. Please verify your vehicle's configuration before ordering.