Tyger Auto TG-RS2C40048 Riser for 2007-2018 Chevy Silverado/GMC Sierra 1500 & 2007-2019 2500/3500HD Crew Cab 4inch Black Side Step Rails Nerf Bars Running Boards IMPORTANT: Only fit Crew Cab with 4 full-size doors (Do not fit 2007 classic model). (Please check the Cab size picture.) 100% brand new OE-style step bars for both driver & passenger sides. All mounting hardware and DIY instruction included Step bars are made of 4inch wide heavy duty triangle mild Steel tubing in Black powder-coating for rust-resistant with UV resistant non-slip wide step pads Easy bolt-on installation. No drilling TYGER no-hassle 5 year warranty