Brand New 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 Yamaha ATV 4 stroke models listed below:
- 2004 - 2009 Yamaha YFZ450
- 2009 - Current Yamaha YFZ450R
- 2010 - 2011 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 OEM REPLACEMENT AND WILL ONLY WORK WITH AN AFTER MARKET BILLET PRO FLOW INTAKE RING or INTAKE