PERFECT FIT: Direct fit for 2007-2013 Silverado Sierra 1500 2007-2014 Silverado Sierra 2500 3500 Ext. Cab (Excl. 07 Classic, 11-14 Diesel) PREMIUM QUALITY: Constructed from mild steel for high strength, E-coated and powder coated for durability, corrosion resistance, and great looks. Designed in the USA by Westins in-house engineers using OEM CAD data, and extensively tested on vehicle to ensure perfect fit and performance. EASY TO INSTALL: Easy bolt-on installation with no drilling required. All installation hardware, mounting brackets, and DIY installation instructions are included. HASSLE-FREE: Backed by a comprehensive 3 year limited warranty against manufacturing defects.