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 KSP Support：Please recheck your vehicle compatibility (year/make/model) in the product description before purchasing the wheel spacers. We offer a "30-day refund, 12-momth free replacement" service. If you have any questions, please feel free contact us, we will provide you with the most satisfactory solution ***KSP PERFORMANCE Front Upper Control Arms W/H High Quality Guarantee***Features and Benefits:1.Designed for vehicles with 2 to 4 inches offroad lift2.Improves suspension travel 3.CNC Bended DOM Seamless Tubing With Heavy Duty Pre-Pressed Ball Joint 4.Professionally Precision Welded 5.Dual Stage Bushing Design for Improved Durability & Response 6.Corrects geometry for proper alignment and improved handling 7.Polyurethane Bushings, zert fittings for easy lubrication 8.ED process and painting for the highest durability 9.Direct replacement for factory arms on suspension that require 10.Additional strength and alignment geometry 11.Professional installation recommended 12.Hardware included Fitment: Fit for 1999 2000 2001 2002 2003 2004 2005 2006 Chevy Silverado 1500 & GMC Sierra 1500 4WD 4X4 RWD Description -These control arms are direct replacement for factory arms on suspension that require additional strength and alignment geometry.-Designed specifically for Chevy Silverado 1500 & GMC Sierra 1500 4WD 4X4 RWD with 2 inch to 4 inches of front lift will restore proper geometry and alignment which will improve driving, handling characteristics and suspension articulation. Includes polyurethane bushings and zerk fittings for simple lubrication.