1987-2004 Yamaha YFM350X Warrior/1994-2005 YFM350FX Wolverine/1998-2001 YFM600 Grizzly Air Filter (KNNYA-4350)Breathe easy and boost performance with the Universal 1987 2004 Yamaha YFM350X Warrior 1994 2005 YFM350FX Wolverine 1998 2001 YFM600 Grizzly Air Filter from K&N. This high flow replacement air filter is designed to increase horsepower and acceleration while providing outstanding filtration. Unlike disposable paper filters, K&N filters are washable and reusable so you buy once and never worry about replacements again. Features Washable and reusable