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.Fits as stock replacement or leveled and lifted applications where an upgrade is desired to provide better performance, style, and function.These arms feature corrected ball joint angle for lifted and leveled applications. The allowable droop travel is also improved with the design of these arms. Ample droop travel is required for good ride quality and all suspension components to last and work properly.. Cognito 11-19 Chevy/GMC Silverado/Sierra 2500/3500 HD 2WD/4WD Ball Joint SM Series UCA Builders Kit. Press In Ball Joint SM Series UCA Builders Kit 2011-2019 GM 2500/3500 Trucks. Cognito Ball Joint SM Series Upper Control Arm Kit. Maintenance free ball joint and pivot bushings. Corrected ball joint angle. 1.5-hour DIY install time. Control Arm Kit. Made in The USA. Added caster

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