SKU: UMI4025-B
MPN: 4025-B
The 68-72 GM A-Body adjustable upper control arms from UMI Performance are engineered for enthusiasts and mechanics seeking precise suspension geometry correction on classic Chevrolet, Pontiac, Oldsmobile, and Buick intermediates. Whether you're restoring a Chevelle, GTO, Cutlass, or Skylark, or modernizing handling on a street machine, these adjustable control arms address the factory camber and caster limitations that plague stock A-Body suspensions. Built for both stock restorations and high-performance builds, they deliver the geometry tuning necessary for improved tire wear, cornering grip, and brake balance.
UMI's adjustable design allows independent camber and caster tuning without the need for shims or frame modifications, a critical advantage over factory stamped arms. The precision-forged construction and robust ball joints accommodate both street and track use while maintaining durability under aggressive driving conditions. Adjustment range enables you to dial in negative camber for flat handling and positive caster for improved directional stability—essential tuning parameters that directly influence suspension performance. The adjustable geometry also complements modern tire compounds and suspension upgrades, preventing the excessive positive camber and caster loss common in unmodified A-Body frames.
These control arms fit all 1968–1972 GM A-Body models and integrate seamlessly with OEM frame mounting points, requiring no drilling or welding. Mechanics and builders regularly pair these arms with modern coilover suspension systems, upgraded sway bars, and performance brakes to achieve contemporary handling while preserving classic aesthetics. The adjustable upper control arms work in conjunction with UMI's complementary suspension components for a complete geometry package. Installation is straightforward for anyone with basic suspension experience, though professional alignment is mandatory to realize the full performance benefit and ensure even tire wear across your build.
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