K&N Powersports Cartridge Oil Filters Are Designed to Satisfy the Needs of Racers and Engine Builders as Well as the Average Motorcycle or ATV Owner Who Wants the Best Oil Filter Available. K&N Powersports Oil Filters Are 'TUV' Product Endorsed and 'TUV' Factory Production Monitored. K&N Cartridge Oil Filters Trap Harmful Contaminants While the Filter's Construction Allows for High Oil Flow Rates. K&N Oil Filters Are Covered by a Limited Warranty to Be Free From Defects in Materials and Workmanship When Installed and Replaced Using Engine and Equipment Manufacturer's Recommended Service Intervals. Fits the Following Yamaha Models: * RAPTOR 250 2009, 2011 * RAPTOR 250 SE 2008-2009 * WR250F 2009, 2011 * WR250R 2009-2011 * WR250X 2009-2011 * WR450F 2009, 2011 * XT250 2009-2010 * YFZ450 2007-2009 * YFZ450R 2009-2011 * YFZ450X 2010-2011 * YZ250 2009-2011 * YZ250F 2009, 2011 * YZ450 2010 * YZ450F 2009, 2011