4" SS CHROME SIDE STEP NERF BARS RUNNING BOARDS 01-14 SILVERADO/SIERRA CREW CAB Application: 2001-2013 Chevy Silverado 1500 / 1500 HD Crew Cab Models, 2001-2014 Chevy Silverado 2500 / 2500 HD / 3500 / 3500 HD Crew Cab Models, 2001-2013 GMC Sierra 1500 / 1500 HD Crew Cab Models, 2001-2014 GMC Sierra 2500 / 2500 HD / 3500 / 3500 HD Crew Cab Models, 2004-2013 GMC Sierra 1500 Crew Cab Denali Models, 2011-2014 GMC Sierra 2500 HD / 3500 HD Crew Cab Denali Models ( Will Fit Models With 4 Full Size Doors Only ) 4" Inch Side Step Nerf Bars Heavy Duty T-304 Full Stainless Steel With 5 years Warranty Against Rust And Corrosion, Oval Design Provides A More Secure Area color:Chrome 465 lbs. Weight rating. Bar is positioned high and tight for a better fit and cleaner look. Professional installation is recommended