Control Arm Screw-In Alum Shaft 9-1/4in 10Deg

The Control Arm Screw-In Alum Shaft 9-1/4in 10Deg from Allstar Performance is a precision suspension component engineered for circle track racing, road racing, and performance street vehicles requiring adjustable geometry tuning. This upper control arm assembly enables drivers and suspension technicians to dial in camber angles with precision, compensating for track-specific demands, load transfer, and driver preference. The 10-degree screw-in ball joint design permits fine-grain adjustment without requiring complete arm replacement, reducing downtime and cost during setup iterations.

Manufactured from aluminum tubing with steel ball joint components and a durable black powder coat finish, this 9.25-inch control arm balances weight savings with structural rigidity—critical for maintaining suspension stiffness under cornering loads. The screw-in ball joint interface allows incremental length adjustments, enabling camber correction in 0.5-degree increments typical of modern racing setups. The aluminum shaft resists corrosion while minimizing unsprung mass, improving suspension response and tire contact patch consistency. The universal mounting design accommodates a broad range of custom and OEM chassis, though verification of ball joint thread compatibility and mounting bore diameter is essential before installation.

This control arm is ideal for dedicated racers, suspension-tuned street cars, and fabricators building custom A-arm assemblies. Proper installation requires verification of wheel alignment post-adjustment to ensure camber, caster, and toe-in specifications match target geometry. The screw-in design demands periodic re-torque checks during break-in to prevent ball joint loosening under vibration. Pair this component with quality bearing spacers, rod ends, or OEM ball joints (as applicable to your platform) and a precision alignment setup for optimal geometry control.