A-Arm 9.0in Screw-In B/J

The A-Arm 9.0in Screw-In B/J from JOES RACING PRODUCTS is a precision-engineered suspension component designed for serious racers and high-performance vehicle builders who demand adjustability and durability under extreme conditions. This screw-in ball joint assembly is built to handle the rigorous demands of road racing, autocross, and circle track competition where suspension geometry tuning directly impacts lap times and handling balance.

Whether you're dialing in camber curves or fine-tuning roll centers on a dedicated race car, this component gives you the adjustability needed to optimize your suspension setup across varying track conditions. The 9.0-inch arm length positions this A-arm for common mid-range geometry applications, while the screw-in ball joint design allows you to adjust caster, camber, and toe settings without requiring complete arm replacement or custom fabrication work.

This component is essential for dedicated racers running independent front suspension systems who prioritize adjustability and repeatability over stock comfort. Installation requires professional alignment to ensure optimal performance and safety, making it ideal for teams that constantly refine their setup or swap between different track layouts and load conditions where suspension compliance must be tuned for optimal grip.