K&N Engine Air Filter: High Performance, Premium, Powersport Air Filter: Fits 1999-2012 YAMAHA (YFM400, YFM250 Big Bear, YFM250 Bruin, YFM400, YFM250 Bear Tracker, YFM400 Big Bear) YA-4001

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: 2007-2012 YAMAHA YFM400 Big Bear IRS 4x4; 2007-2009 YAMAHA YFM250 Big Bear; 2005-2006 YAMAHA YFM250 Bruin; 2000-2006 YAMAHA YFM400 Big Bear 4x4; 1999-2004 YAMAHA YFM250 Bear Tracker; 2000-2004 YAMAHA YFM400 Big Bear 2x4

• ULTIMATE LONGEVITY: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle
• ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance
• EASY INSTALLATION: Pre-oiled and ready to install One of the easiest and most cost-effective upgrades for your motorcycle or ATV for quick performance gains
• SAVES MONEY: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters
• ECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste A K&N filter will last longer than 10 disposable filters