1246 No-Toil / Ignition Products Air Filter Fits Honda Crf250 Crf250r Crf250x 2004-2015, Crf450x 2003-2015 Fits Honda Crf250 Crf250r Crf250x 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Fits Honda Crf450 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 DUAL STAGE FOAM: Two different pore sizes create more trapping area for even the smallest dust particles FLAME LAMINATED FOAM: Both "stages" are not glued, but heat sealed to provide maximum air flow RETICULATED FOAM: Increases dirt stopping surface area nd increase foam strength