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
1992-1998	Yamaha	YFB250 Timberwolf 2x4	Base
1994-2000	Yamaha	YFB250FW Timberwolf 4x4	Base
1985-1989	Yamaha	YFM200 Moto-4	Base
1986-1988	Yamaha	YFM225 Moto-4	Base
1999-2004	Yamaha	YFM250 Bear Tracker	Base
2007-2009	Yamaha	YFM250 Big Bear	Base
2005-2006	Yamaha	YFM250 Bruin	Base
1989-1991	Yamaha	YFM250 Moto-4	Base
1988-2006	Yamaha	YFS200 Blaster	Base