A-Arm 8.5in Screw-In B/J Slotted Shaft

The A-Arm 8.5in Screw-In B/J Slotted Shaft from JOES RACING PRODUCTS is a precision-engineered upper control arm designed for professional-grade suspension systems in high-performance and racing applications. This tubular aluminum and steel assembly serves as a critical load-bearing component that maintains wheel alignment and suspension geometry under extreme operating conditions. Whether you're building a competitive race platform or upgrading a heavy-duty tactical vehicle, this control arm delivers the structural integrity and adjustability required for consistent handling and durability in demanding environments.

Constructed from a tubular design with a black powder-coat finish, the A-Arm features a slotted bearing-style ball joint interface with a 10-degree angle that optimizes suspension kinematics for proper caster and camber alignment. The screw-in ball joint design allows for field adjustment and replacement without requiring specialized press equipment, reducing maintenance downtime in operational or competitive settings. The 8.5-inch length and slotted shaft configuration provide fine-tuning capability for suspension geometry, enabling technicians to dial in precise wheel alignment specifications to match platform requirements and driving conditions.

This control arm is ideal for racing teams, off-road enthusiasts, and professionals maintaining high-performance suspension systems where adjustability and reliability are non-negotiable. The screw-in ball joint design facilitates rapid assembly and disassembly, making it well-suited for field repairs and suspension tuning during competitions or operational deployments. Installation requires standard mechanical skill and basic hand tools; ensure proper torque specifications are applied per manufacturer guidelines to maintain suspension geometry integrity and vehicle safety.