PartsTrend 4" Black Nerf Bars Running Boards Compatible with 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 Chevy Silverado GMC Sierra 1500 2500 3500 Crew Cab Side Steps Rail Bars Compatible with: 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 Chevy Silverado GMC Sierra 1500 2500 3500 Crew Cab Nerf Bars Side Steps Running Boards for both driver & passenger sides, all mounting hardware kit and installation instruction included. Polished chrome Dodge Ram running board to a mirror finish and will never rust. 4 inch Chevy Silverado step bars are made of heavy duty black powder-coated tube with UV resistant non-slip wide side step pads. Direct bolt on, no-drill installation for side step, truly custom fit.