| 2004 to 2009 Yamaha YFZ450 Sport ATV Air Intake Video K&N has designed a performance air intake system for the 2004, 2005, 2006, 2007, 2008 and 2009 Yamaha YFZ450 Sport ATV. K&N dynamometer tests show a 4.27 horsepower gain with use of this K&N air intake modification. K&N tests multiple vehicles for each air intake kit it makes to ensure a consistent horsepower and torque gain. |
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