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Rough Country 2.5 Inch Block & U Bolt Kit 1999 2024 Chevrolet Silverado 1500 & GMC Sierra 1500 Running Boards Part #: 449751V Part #: 449751V Make Model Box Length Model Year Length Depth Height Chevrolet Silverado 1500 Extra Short Box 1999 2006 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Extra Short Box 2007 2013 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Extra Short Box 2014 2018 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Extra Short Box 2019+ 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Long Box 1999 2006 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Long Box 2019+ 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Long Box 2007 2013 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Long Box 2014 2018 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Short Box 2007 2013 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Short Box 2014 2018 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Short Box 2019+ 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 1500 Short Box 1999 2006 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 2500 Long Box 1999 2006 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 2500 Long Box 2007 2013 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 2500 Long Box 2014+ 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 2500 Short Box 1999 2006 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 2500 Short Box 2007 2013 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 2500 Short Box 2014+ 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 3500 Long Box Dually 2014+ 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 3500 Long Box Dually 2008 2013 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 3500 Long Box 2007 2013 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 3500 Long Box 1999 2006 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 3500 Long Box 2014+ 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 3500 Short Box 2007 2013 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 3500 Short Box 1999 2006 69 1 2 1 1 2 25 1 8 Chevrolet Silverado 3500 Short Box 2014+ 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Extra Short Box 1999 2006 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Extra Short Box 2007 2013 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Extra Short Box 2014 2018 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Long Box 1999 2006 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Long Box 2019+ 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Long Box 2007 2013 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Long Box 2014 2018 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Short Box 2019+ 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Short Box 2007 2013 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Short Box 2014 2018 69 1 2 1 1 2 25 1 8 GMC Sierra 1500 Short Box 1999 2006 69 1 2 1 1 2 25 1 8 GMC Sierra 2500 Long Box 1999 2006 69 1 2 1 1 2 25 1 8 GMC Sierra 2500 Long Box 2007 2013 69 1 2 1 1 2 25 1 8 GMC Sierra 2500 Long Box 2014+ 69 1 2 1 1 2 25 1 8 GMC Sierra 2500 Short Box 1999 2006 69 1 2 1 1 2 25 1 8 GMC Sierra 2500 Short Box 2007 2013 69 1 2 1 1 2 25 1 8 GMC Sierra 2500 Short Box 2014+ 69 1 2 1 1 2 25 1 8 GMC Sierra 3500 Long Box Dually 2001 2007 69 1 2 1 1 2 25 1 8 GMC Sierra 3500 Long Box Dually 2014+ 69 1 2 1 1 2 25 1 8 GMC Sierra 3500 Long Box Dually 2008 2013 69 1 2 1 1 2 25 1 8 GMC Sierra 3500 Long Box 1999 2006 69 1 2 1 1 2 25 1 8 GMC Sierra 3500 Long Box 2014+ 69 1 2 1 1 2 25 1 8 GMC Sierra 3500 Long Box 2007 2013 69 1 2 1 1 2 25 1 8 GMC Sierra 3500 Short Box 1999 2006 69 1 2 1 1 2 25 1 8 GMC Sierra 3500 Short Box 2014+ 69 1 2 1 1 2 25 1 8 GMC Sierra 3500 Short Box 2007 2013 69 1 2 1 1 2 25 1 8 Additional Information