Product description

K&N style ATV Air Filter

Pleated element style for more air flow
More power and acceleration
Washable and re-usable
ID is 4 3/8"
Fits the fits Yamaha ATV 4 stroke models listed below:
2004 - 2009 fits Yamaha YFZ450
2009 - Current fits Yamaha YFZ450R
2010 - 2011 fits Yamaha YFZ450X
The corresponding K&N part number is RU-4740, and this filter fits everything that this filter fits

This WILL fit inside the factory airbox!

It needs the Pro Flo adapter ring to mount properly. It does not use the factory cage and mounting stud

THIS FILTER IS NOT AN OĖM REPLACEMENT AND WILL ONLY WORK WITH AN AFTER MARKET BILLET PRO FLOW INTAKE RING or INTAKE

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