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: Yamaha YFM250B BRUIN 2X4 2005-2006 YFM350A BRUIN (Auto) 2WD 2004-2006 YFM350A GRIZZLY 2WD 2009-2021 YFM350AG GRIZZLY 2WD 2018 YFM350FA BRUIN (Auto) 4WD 2004-2006 YFM350FA GRIZZLY 4WD 2007-2021 YFM350FG GRIZZLY IRS 2007-2011 YFM350GW GRIZZLY AUTO 2X4 2007-2011 YFM400 KODIAK 2005-2006 YFM400FA GRIZZLY (AUTO) 4WD 2007-2008 YFM450 Kodiak EPS 2018-2021 YFM450FA GRIZZLY AUTO 4WD 2007-2014 YFM450FA KODIAK 4X4 2007 YFM450FAP GRIZZLY EPS AUTO 4WD 2013-2014 YFM450FAP GRIZZLY EPS AUTO 4X4 2011-2012