UMI Performance offers an on-car adjustable control arm for the rear of the GM B-Body vehicle. This rear upper control arm for the 65-66 GM B-Body is a direct replacement for the factory arms and is designed to minimize wheel hop, improve corning, and help track consistency. It allows for easy pinion angle adjustments without the need to remove it from the vehicle. The control arm features greaseable bushings, TIG welded construction, and a 4140 heat treated Chrome-Moly adjuster. Please verify whether your vehicle has (1) or (2) upper control arms. Six cylinder and most small block vehicles were supplied with a 3-link rear suspension while big block vehicles used a 4-link set-up.
UMI’s 3662 rear upper control arm is a direct replacement that reduces wheel hop, improves cornering, and boosts track consistency. Easy on-car pinion angle adjustments with greaseable bushings, TIG welds, and a 4140 Chrome-Moly adjuster.
UMI Performance 67-70 GM B-Body Adjustable Upper Control/Trailing Arm
UMI B-Body upper arm improves handling and allows easy pinion tuning.
On-Car Adjustability using a 4140 Heat Treated Adjuster
Grease-able High Quality Polyurethane Bushings
4140 Chrome-Moly Tube Adaptors
Brilliant Durable Powder Coat
TIG Welded Construction
UMI- Rear Trailing Arm
Upper Control Arm
