Nfab N-Durastep Nerf Step Bar, Wheel to Wheel NDC11100CC Fits 2011 to 2013 Chevy and GMC 2500 and 3500 Crew Cab; With 6.6' Bed; N-Durastep Finish: Black Powder Coated; Number of Steps: 4; Bar Diameter: 3; Length Modular: Welded One Piece Construction; Body Lift Compatibility: Yes; Weight Rating: 445; Sold as CHEVROLET GMC SIERRA 2500 HD SIERRA 3500 HD SILVERADO 2500 HD DENALI LT LTZ SLE SLT WT 2011 2012 2013 2014 6.6L Duramax Turbo Diesel LGH (403) 6.6L Duramax Turbo Diesel LML (400) 6.6L Duramax Turbo Diesel LML (403) 6L GEN IV CNG LC8 Vortec (364) 6L GEN IV Flex L96 Vortec (364) 6L GEN IV L96 Vortec (364) 6L GEN IV LC8 Vortec (364) CNG DIESEL FLEX GAS Nfab N-FAB N-Durastep Wheel To Wheel Nerf Steps (Black) - NDC11100CC NDC11100CC Nerf/Step Bar Wheel to Wheel