APS iBoard (Silver 4 inches) Running Boards | Nerf Bars | Side Steps | Step Rails for 2007-2018 Chevy Silverado/GMC Sierra Crew Cab & 2019 2500 HD / 3500 HD Crew Cab (Excl. 07 Classic Models) Set of 2 iBoard running boards for your truck or suv, INCLUDES support brackets, mounting Kit, hardware, and DIY instructions. Rocker Panel Mount Installs in under 1 hour, with NO DRILLING required for most trucks. Side steps bolt on to your truck's rocker panel or frame. POLISHED 4 inches aluminum running boards with step pad - supports up to 300 LBS on either passenger or driver side. No-hassle 3 year warranty against manufacturing defects. Great looking CAB LENGTH nerf bars for your: 2007-2018 Chevy Silverado / GMC Sierra Crew Cab & 2019 2500 HD / 3500 HD Crew Cab (Excl. 07 Classic Models)