Pro GUARD 7 air filter media is constructed using 5 layers of progressively finer medical upgrade cotton gauze, combined with 2 layers of non-woven synthetic polyester fabric with random porosity. The result is high-performance airflow with the filtration efficiency of a heavy duty filter.
Aries Powersport OE Replacement Air Filter w/ Pro GUARD7 Media Yamaha WR250F/WR450F 03-09 11-13
Yamaha WR250F/WR450F 03-09/11-13

Fitment
2003 Yamaha WR250F Base
2003 Yamaha WR450F Base
2004 Yamaha WR250F Base
2004 Yamaha WR450F Base
2005 Yamaha WR250F Base
2005 Yamaha WR450F Base
2006 Yamaha WR250F Base
2006 Yamaha WR450F Base
2007 Yamaha WR250F Base
2007 Yamaha WR450F Base
2008 Yamaha WR250F Base
2008 Yamaha WR450F Base
2009 Yamaha WR250F Base
2011 Yamaha WR450F Base
2012 Yamaha WR450F Base
2013 Yamaha WR450F Base