04-Current Ford F-150;06-08 Lincoln Mark LT;Pro Series heavy-duty ball joint allows for increased strength and angle for greater wheel travel for lifted applications without sacrificing ride quality;Billet o-ring dust cap and sealed ball joint assembly protects the ball joint assembly from corrosion, dirt and debris in harsh off-road conditions;Gusseted pivot and ball joint housings are designed for maximum clearance and engineered for maximum strength for lifted applications;Helix grooved multi-rate bushing assembly using PTMEG urethane preserves lubrication and protects from debris for less maintenance with PTMEG cross linked urethane providing more durability over standard bushings;Super durable polyester black powder coat long lasting finish that maintains a premium look and protects from humidity and corrosion;California Residents:WARNING