The Cognito 110-90761 Ball-Joint SM Series Upper Control Arm Kit for your 2020 GM 2500HD/3500HD 2WD/4WD are a direct replacement for the factory control arms. These are a great upgrade for stock, leveled, and lifted applications where an upgrade is desired to provide better performance and style. The boxed sheet metal upper arms are CNC robot welded and powder coated in a semi-gloss black for long lasting durability. This control arm kit corrects the ball joint angle for lifted and leveled applications, increasing droop travel, and also increases caster slightly for better highway speed drivability. The upper control arm kit includes alloy series ball joints, new crush sleeves, and polyurethane bushings. Features: Added Caster CNC Robot Welded Polyurethane Bushings Corrected Ball Joint Angle Semi-Gloss Black Powder Coating Made in the USA Application Note: This upper control arm is NOT designed to be a droop travel limiter. You must use Cognito specified shocks and lift kit to limit droop travel or else damage to this arm and other components of the suspension and drivetrain may occur.