Ball Joint SM Series Upper Control Arm Builders Kit (110-91146)This control arm kit is a Builders Kit meaning the control arms are raw and un assembled so a builder can custom powder coat the arms and then assemble them, rather than purchase black powder coated and assembled control arms and risk damaging bushings and ball joints while pressing them out of the arms, then stripping the black powder coat. Features Cognito Ball Joint SM Series Upper Control Arm Kit Corrected ball joint angle Added caster Maintenance