UMI Performance 3661-B Upper Control Arm Rear Suspension

The UMI Performance 3661-B is a precision-engineered rear upper control arm designed to dramatically improve the handling and traction of GM muscle cars and performance vehicles. Built from 1.750" x 0.120" DOM (Drawn Over Mandrel) mild steel tubing, this control arm replaces weak factory stamped steel components with a robust TIG-welded construction that eliminates flex and bushing deflection.

Key Features:

• 1.750" x 0.120" wall DOM mild steel tubing for maximum strength and rigidity
• CNC-machined bushing holders ensure precise fitment and alignment
• TIG-welded construction for superior durability
• Greaseable Energy Suspension polyurethane bushings included
• Durable powder coat finish resists corrosion and wear
• Direct bolt-on replacement for factory control arms
• Sold individually - verify your vehicle's rear suspension configuration before ordering

This control arm addresses the primary weaknesses of OEM rear suspension components, which suffer from bushing deflection and weak stamped steel construction. The included polyurethane bushings provide a significant upgrade over factory rubber bushings, reducing deflection while maintaining comfortable ride quality. These improvements translate to minimized wheel hop, enhanced cornering stability, and improved track consistency.

Application Note: Six-cylinder and most small-block V8 GM vehicles use a 3-link rear suspension configuration (requiring one upper control arm), while big-block vehicles typically feature a 4-link setup (requiring two upper control arms). Verify your vehicle's suspension configuration to determine the correct quantity needed.

Ideal for street performance vehicles, drag racing applications, and restoration projects where handling and traction improvements are priorities.