MaxMate Premium Truck Running Boards for 2007-2017 Chevy Silverado/GMC Sierra 1500; 2007-2015 Silverado/Sierra 2500/3500 Ext/Double Cab (Excluding Diesel Models with DEF Tanks) IMPORTANT: ONLY Fit Extended/Double Cab with 2 Full-Size Front Doors and 2 Suicided Rear Doors. (Please see the Cab Size illustration image above.) 100% brand new two running boards for both driver & passenger sides. All mounting hardware and DIY instruction included Running Boards are designed for pickups and made of heavy duty quality materials solid and tough. Easy No-Drilling installation. DIY instruction included in package. No-Hassle 5-year warranty!