Twin Air Air Filter 152313FRX fits 2001-2002 Yamaha WR250F, WR426F / 1998-1999 Yamaha WR400F, YZ400F / 2001-2013 Yamaha YZ250F / 2000-2002 Yamaha YZ426F / 2003-2009 Yamaha YZ450F

Filter only for use with Twin Air Power Flow kits.The same factory treatment that race teams and OEMs receive is now available for all Twin Air usersFilters are pre-oiled with Twin Air BIO Foam Filter Oil using our state of-the-art filter oiling machines to provide the ultimate consistency in pore coverageSame industry-leading Twin Air Filter you are used to, now pre-oiled for your convenienceComes in a new, resealable bag for added convenienceAvailable in standard Twin Air replacement filters and PowerFlow Twin Air replacement filters