SKU: UMI4016-B
MPN: 4016-B
The 68-72 GM A-Body Rear Upper Control Arm from UMI Performance is a critical suspension component designed for enthusiasts and mechanics building or restoring classic Chevelle, Malibu, and Cutlass platforms. This control arm is essential for anyone upgrading their rear suspension geometry, whether you're pursuing street performance, autocross handling, or a complete frame-off restoration. The rear upper control arm controls wheel alignment angles and rear axle housing movement, making it fundamental to both safety and predictable cornering behavior in first-generation A-Body muscle cars.
UMI Performance's 4016-B control arm features precision-engineered construction that corrects factory alignment compliance and accommodates modern suspension tuning. The component's design addresses the original equipment's limitations, reducing rear axle housing deflection under acceleration and cornering loads while improving camber control across the suspension travel range. At 7.5 lbs with compact dimensions (14.1 x 6.5 x 4.7 inches), this control arm integrates seamlessly into OEM and upgrade suspension systems, offering superior rigidity compared to aging original parts. The engineering delivers measurable improvements in tire wear patterns, predictability during hard cornering, and overall rear-end stability—critical factors for any performance-oriented build.
This rear upper control arm is ideal for 1968–1972 GM A-Body applications, including Chevrolet Chevelle, Pontiac Lemans, Oldsmobile Cutlass, and Buick GSX models. Installation pairs effectively with coilover conversions, leaf spring upgrades, or complete independent rear suspension swaps. Mechanics and builders frequently specify this component as part of comprehensive suspension refreshes to restore factory geometry or dial in custom alignment for track use. Proper installation requires basic suspension knowledge and appropriate alignment equipment; most installations are completed in 1–2 hours per side with standard automotive tools.
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