K&N performance High-Flow Air Filters are engineered to improve engine performance by increasing airflow. Unlike disposable paper filters which must be frequently replaced, K&N Air Filters are washable, reusable, and engineered to last for the life of your motorcycle, ATV, or Side-By-Side vehicle. K&N air filters are backed by our famous 10-Year/Million Mile Limited Warranty, and they provide an environmentally friendly way to reduce landfill waste by avoiding disposable filters. Engineered to fit easily into your factory air box, installation can be completed in a matter of minutes! K&N develops and tests each product on the world's toughest race tracks, so we can bring the highest level of performance for your journey. Join the millions of customers who have saved money and improved performance by upgrading to K&N filtration. Fitment Information: 2012-2014 YAMAHA YFM350 Grizzly Auto; 2007-2014 YAMAHA YFM350 Grizzly Auto 4x4; 2012-2014 YAMAHA YFM450 Grizzly Auto; 2013-2014 YAMAHA YFM450 Grizzly EPS; 2013-2014 YAMAHA YFM450 Grizzly EPS Hunter; 2013 YAMAHA YFM450 Grizzly; 2013 YAMAHA YFM450 Grizzly Hunter; 2007-2012 YAMAHA YFM350 Grizzly Auto 4x4 IRS; 2011-2012 YAMAHA YFM450 Grizzly Auto EPS; 2007-2011 YAMAHA YFM350 Grizzly Auto 2x4; 2007-2011 YAMAHA YFM450 Grizzly Auto 4x4; 2009-2011 YAMAHA YFM450FX Wolverine Auto 4x4; 2009-2010 YAMAHA YFM450 Grizzly Auto 4x4 IRS; 2006-2009 YAMAHA YFM350X Wolverine 2x4; 2009 YAMAHA YFM450 Grizzly Auto 4x4 Hunter; 2007-2008 YAMAHA YFM400 Grizzly Auto 4x4; 2006-2008 YAMAHA YFM450FX Wolverine 4x4; 2004-2006 YAMAHA YFM350 Bruin Auto 2x4; 2004-2006 YAMAHA YFM350 Bruin Auto 4x4; 2005-2006 YAMAHA YFM350 Bruin Auto 4x4 Hunter; 2004-2006 YAMAHA YFM400 Kodiak Auto 4x4; 2005-2006 YAMAHA YFM450 Kodiak Auto 4x4; 2004 YAMAHA YFM400 Kodiak Auto 2x4