K&N’s YA-1009R is a replacement air filter specially designed for asphalt racing only.  Its two ply cotton media is designed to be less restrictive, providing a better racing advantage, for the 2009 Yamaha YZF R1’s 998cc liquid-cooled 4-stroke DOHC 16 valve engine. This K&N replacement panel air filter is designed to drop directly into the factory air box.

K&N racing air filters are designed to increase horsepower and acceleration. K&N filters are made by hand in the United States and are constructed of the finest materials. The YA-1009R, like all of K&N's replacement air filters, is washable and reusable.

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