Ball Joint Stud +.500 for 1210-106 / 1210-217S

The QA1 Ball Joint Stud +.500 for 1210-106 / 1210-217S (SKU QA19029-217) is a precision replacement component engineered for suspension geometry correction and vehicle handling optimization. This extended-length ball joint stud delivers the additional clearance and load-bearing capacity required in modern suspension tuning applications where standard geometry falls short of performance requirements.

Manufactured from hardened steel and finished in black oxide for corrosion resistance, this stud features a 1.500-inch-per-foot taper, 4.643-inch base length, 1.625-inch ball diameter, and 5/8-18 thread specification. The plus-0.5-inch extended length provides the offset geometry necessary for independent suspension systems requiring precise control-arm positioning. Black oxide coating protects against surface corrosion while maintaining the exact dimensional tolerances demanded by OEM suspension specifications and competition-grade chassis setups.

This replacement stud is designed for technicians and suspension specialists working on street performance vehicles, track-prepared cars, and off-road platforms where suspension geometry must be adjusted beyond factory specifications. The QA1 component integrates directly with compatible control arms and knuckle assemblies on models 1210-106 and 1210-217S, restoring or modifying suspension alignment for improved handling response and extended component service life.

QA1 is recognized in the suspension engineering market for dimensional accuracy and metallurgical consistency, ensuring that replacement studs maintain the critical tolerances required for steering stability and load distribution across the suspension system.