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K+N style air filter PRO FLOW 2004-2020 Yamaha YFZ450 YFZ450r fits inside airbox
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 ...
Vito's PerformanceK+N style air filter PRO FLOW 2004-2020 Yamaha YFZ

Vito's Performance

K+N style air filter PRO FLOW 2004-2020 Yamaha YFZ450 YFZ450r fits inside airbox

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Specifications
Specification
Part Type
Air Filters & Parts
Condition
New
Part Number
KN1645
Part Brand
Yamaha
Fits
ATV
Warranty
30 Days
Description

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

Application List
ImageSKU / Part NoApplicationDetailStock
 KN1645Yamaha YFZ450 (2004-2013)Out of Stock
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