HARDRACE is proud to announce the Pick up truck series arms. Our pick-up trucks control arms are well-known for high strength steel tubes with 4mm tube wall thickness, designed for the mild lift, also features our Harden Rubber Bushings which allow you to tackle tough terrain.. Pick up truck series arm. Increase caster for better ride quality. Grease nuts design for regrease it / inside the upper black boot. Super strong and durable. High strength steel tubes with 4mm tube wall thickness. CR-MO Ball Joint and special boot design, self anti-dust function. Equipped with superior harden rubber bushings. ED process and painting for the highest durability. Dramatically improving handling performance  Note: Harden Rubber Equipped 2 PCS/SET2 ~ 4 INCH LIFT* ALSO FITS '14-18 WITH OE CAST STEEL FRONT UPPER ARMS  Fits: Chevrolet Silverado 1500 2006-2014 Chevrolet Silverado 1500 2014-2018 Gmc Sierra 1500 2006-2014 Gmc Sierra 1500 2014-2018