UMI Performance 3652-B Upper Control Arm for GM B-Body - 1958-1964

The UMI Performance 3652-B is a premium rear upper control arm designed specifically for 1958-1964 GM B-Body vehicles. This high-performance replacement arm eliminates wheel hop, improves cornering stability, and enhances track consistency by replacing worn factory components with superior materials and engineering.

Key Features:

• On-Car Adjustability: Unique design allows pinion angle adjustments while the arm remains installed on the vehicle—no removal required like competitor designs
• 4140 Heat Treated Chrome-Moly Adjuster: Precision-machined adjuster with left and right hand threads for easy adjustment by loosening two jam nuts
• Premium Construction: TIG welded with 4140 Chrome-Moly tube adaptors for maximum strength and durability
• Greaseable Energy Suspension Bushings: High-quality polyurethane bushings provide improved performance and longevity over factory rubber
• Durable Finish: Brilliant powder coat finish for long-lasting protection and appearance
• Direct Factory Replacement: Bolt-in installation eliminates the need for shims during setup

Commonly known as "Banana Arms" due to their distinctive shape, these upper control arms represent one of the only on-car adjustable solutions available for GM B-Body rear suspensions. This item is sold individually—please verify if your vehicle uses a 3-link setup (one upper arm, typical for six-cylinder and most small block applications) or 4-link setup (two upper arms, typical for big block applications).