Two stroke kits include all applicable O-rings, springs, washers and gaskets. Four stroke kits include the exhaust gasket. Multi-cylinder applications include enough items for the entire machine. Polaris® kits include gasket, both header donuts and springs

This Part Fits:

Year	Make	Model	Submodel
2004-2013	Yamaha	YFZ450	Base
2009-2020	Yamaha	YFZ450R	Base
2010-2011	Yamaha	YFZ450X	Base