Metric Upper Control Arm Left 9in

The Metric Upper Control Arm Left 9in from ALLSTAR PERFORMANCE is an essential suspension component designed for racers and performance enthusiasts seeking precise steering geometry and improved handling characteristics. This left-side upper control arm is engineered to replace worn or damaged OEM units on metric-dimensioned suspension systems, restoring proper wheel alignment and suspension travel. Whether you're building a competition vehicle, refreshing aging suspension components, or upgrading to a street-strip setup, this control arm delivers the geometry and durability required for consistent performance and driver confidence.

At 9 inches in length, this upper control arm establishes the critical relationship between the frame and wheel hub, directly influencing camber, caster, and kingpin inclination angles. The metric specification ensures compatibility with modern suspension architectures that deviate from traditional inch-based designs, common in contemporary performance builds and imports. Constructed from high-strength materials rated for sustained track use and dynamic load cycles, ALLSTAR PERFORMANCE's design minimizes deflection under cornering forces while maintaining proper ball-joint geometry throughout suspension articulation, enabling more responsive steering input and predictable tire contact patches.

This component suits builders working on metric-platform vehicles or those upgrading suspension systems where OEM arms exhibit excessive wear, cracks, or insufficient rigidity for performance driving. Installation typically requires frame support, proper alignment tooling, and post-installation four-wheel alignment to establish baseline geometry—a critical step often overlooked by DIY mechanics. Verify your vehicle's suspension specifications and existing control arm dimensions before ordering to ensure seamless fitment and optimal handling balance across all four corners.