Tyger Auto TG-ST2C50028 Black 2007-2018 1500, 2007-2019 Silverado/Sierra 2500/3500HD Crew Cab (4.75" Wide & 85" Long | Running Boards | Side Step Rails | Nerf Bars) IMPORTANT: Only fit Crew Cab with 4 full-size doors. (Please check the Cab Size picture.) 100% new running board kit includes both driver & passenger sides TYGER STEP boards are made of corrosion proof extruded aluminum with 4.75 inch wide step area. Black anodized aluminum with silver trims for a neat customized look! Easy bolt-on installation. No drilling. All mounting hardware and DIY instruction included TYGER No-Hassle 5 Year warranty!