NO TOIL manufactures the world's best 2-stage foam air filters. Using only the best flame-laminated dual-layer foam bonded with the highest quality glue they hand make each foam filter to stand up to the roughest and toughest riding or terrain. NO TOIL filters can be used with NO TOIL biodegradable clean in water cleaner providing the best air filtration system in the world. Fits: KTM 125 EXC ENDURO 2008-2011 125 SX 2007-2010 144 SX 2007-2008 150 SX 2009-2010 200 EXC 2008-2009 2011 250 EXC 2008-2011 250 EXCE 2009 250 EXCF 2008-2011 250 SX 2007-2010 250 SXF 2008-2010 250 XCW 2009-2011 300 EXC 2008-2010 300 EXCE 2008-2013 300 XC 2008-2010 400 EXC 2009-2013 450 EXC 2008-2011 450 SX ATV 2009-2010 450 SX RACING 2007 450 SXF 2007-2010 450 XC ATV 2009 450 XCW 2009-2011 505 SX ATV 2009-2010 505 SXF 2007-2008 505 XCF 2008-2009 525 XC ATV 2009-2010 530 EXC 2008-2011 530 XCW 2009-2011