Shaft A-Arm Steel

The Shaft A-Arm Steel control arm cross shaft from JOES RACING PRODUCTS is a precision upper control arm component engineered for chassis builders and performance suspension tuners who demand adjustability and durability. This universal, slotted steel shaft serves as the critical cross-member in independent front suspension systems, allowing fine-tuned camber and caster geometry adjustments essential for track setup, road racing, and high-performance street applications. Whether you're dialing in a circle-track car, bracket racer, or custom build, this component gives you the control needed to achieve optimal tire contact patches and handling balance.

Manufactured from solid steel and finished with zinc plating for corrosion resistance, the Shaft A-Arm Steel measures 12 inches in length with a compact 1 x 1 inch cross-section, keeping weight minimal at just 1.7 lbs while maintaining structural rigidity. The slotted design is the key differentiator—it permits lateral adjustment of the upper control arm mounting points, enabling mechanics to modify suspension geometry without welding or fabricating new components. Zinc plating protects against rust and salt exposure during storage and outdoor transport, critical for competitors who trailer between events or operate in humid climates.

This shaft works best for builders constructing custom front ends, dirt-track racers fine-tuning alignment, and vintage restoration projects requiring period-correct suspension geometry. The universal design integrates with most bolt-together control arm kits and aftermarket suspension packages that use 1-inch diameter shafts. Installation requires basic mechanical knowledge—simply bolt the shaft between your upper control arm mounts using appropriate fasteners and lock washers, then adjust the slot position to achieve your target camber angle. Always verify clearance with your specific frame, engine bay components, and steering linkage before final assembly.