Patented exclusively by QA1 for circle track racing applications, ball joints offer ultimate, low-friction operation. Completely smooth and bind-free, ball joints’ infinite preload adjustment allows breakaway torque to be set as low as 0 ft. /lbs. Ball joints are offered with standard or +.500" long studs. Replacement studs may be purchased separately in standard, +.500", and +.100" lengths while replacement ball joint housings are also offered separately.