Check the listing for details. KSP 2pcs 2-4" Adjustable Front Upper Control Arms for Silverado Sierra 1999-2006. Condition: New. Listed at 189.99 USD. About this item Fitment: Fit for Chevy 1999-2006 Silverado 1500, 2002-2006 Avalanche 1500, 2003-2011 Express 1500, 2000-2006 Suburban 1500 & Tahoe, GMC 1999-2006 Sierra 1500, 2000-2006 Yukon & Yukon XL 1500, 2003-2013 Savana 1500, Cadillac, 2002-2006 Escalade & Escalade EXT, 2003-2006 Escalade ESV Notice: Please tighten the zerk at any direction after refilling grease. DO NOT use excessive force to prevent copper zerk broken. And new ball joint DO NOT need to add extra grease within 1 year. Process: Powder coated surface, can effectively prevent rust and corrosion. CNC machined provides bolder and safer pipe diameter. High frequency heat treatment alloy steel ball pin design, stronger and more durable. Thickened cold-drawn steel pipe, corrects the chassis after the vehicle is lifted Advantage: Dom tuber arms, solve the problem that the control arms don't fit after the vehicle is lifted. The ball pin has a hex hole for easy installation. Pre-installed dust boot shields socket components from wear-causing contaminants. Greaseable socket, allows new lubricant to flush contaminants, reduces corrosion. PU bushing enhances driving performance and service life, suitable for high or low temperature weather Product Description KSP Silverado Sierra Front Upper Control Arms FITMENT High Quality Material PU Bushing Fit lower tempreture "U" groove design, no noise and oil leakage Better driving performance Zinc-Nickel Alloys Ball Joint Enhanced anti-rust ability Increase in strength Never rust Heat treated Replacement Factory Arms Details About the Control Arm Powder Coated Add grease easily Don't screw the zerk too tight Thicker tubular arms