FMF Stainless Steel PowerBomb Exhaust Header & Factory 4.1 RCT SL Muffler - Honda CRF450X - 2005-2016_041082|041517 Manufacturers Part Number: 041082 & 041517 FITS: Honda CRF450X ( 2005, 2006, 2007, 2008, 2009, 2012, 2013, 2014, 2015, 2016 )