Fact 4.1 Yfz450 '04 07 Slip On

Features:

• Horsepower gains throughout the RPM range


• Advanced engineering and patent-pending design


• Optional quiet inserts and spark arrestor available


• Titanium silencer construction paired with durable stainless steel midpipe


• Use with stock or FMF header


• Not legal for use in California on pollution controlled vehicles, race use only in California - waiver available

Fitment:
2004 Yamaha YFZ450
2005 Yamaha YFZ450
2006 Yamaha YFZ450
2007 Yamaha YFZ450
2008 Yamaha YFZ450
2009 Yamaha YFZ450
2012 Yamaha YFZ450
2013 Yamaha YFZ450