Compatible with OEM Part Numbers Yamaha 1UY-11310-03-00, 4KB-11351-00-00,93450-19095-00, 4GB-11610-00-00,1YW-11631-01-Y0, 55V-11633-00-00,1UY-11181-01-00, 5YT-11310-00-00,4WU-11310-00-00 Compatible with the Yamaha 1987-1999 Big Bear 350, 1987-1988 Big Wheel 350, 1987-1995 Moto-4 YFM350ER, 1987-2004 Warrior 350, 1995-2009 Wolverine 350, 2004-2006 Bruin 350, 2004-2011 Raptor 350, 2007-2011 Grizzly 350 Includes Cylinder and Spark Plug Also includes Namura Top End Kit - Piston, Piston Rings, Wrist Pin, Clips, Top End Bearing, Gasket Kit Cylinder Bore and Stroke 83.00mm x 64.50mm Included Items in This Bundle:

(QTY 1) NICHE 519-CCY2220L Engine Cylinder

Substitute For OEM Part Numbers(s): 5YT-11310-00-00, 4WU-11310-00-00, 1UY-11310-03-00

(QTY 1) NICHE 2-D8EA Spark Plug

Substitute For OEM Part Numbers(s): NGK-DR8ES-00-00, NGK-DR8EA-00-00, NGK-D8EA0-00-00, DR8-EA000-00-00, D8E-A0000-00-00, 94703-00333-00, 94701-00333-00, 94701-00157-00, 94700-00822-00, 94700-00333-00

(QTY 1) NICHE 186-4005 Namura Piston Kit

Substitute For OEM Part Numbers(s):

Fits The Following OEM Models:

Yamaha Big Bear 350 2WD: 1996-1999
Yamaha Big Bear 350 4X4: 1987-1999
Yamaha Big Bear 350 Hunter Edition 4X4: 1999
Yamaha Bruin 350 2WD: 2004-2006
Yamaha Bruin 350 4X4: 2004-2006
Yamaha Bruin 350 Hunter Edition 4X4: 2004-2006
Yamaha Grizzly 350 2WD: 2007-2011
Yamaha Grizzly 350 4X4: 2007-2011
Yamaha Grizzly 350 Hunter Edition 4X4: 2008-2011
Yamaha Grizzly 350 Hunter Edition IRS 4X4: 2007-2011
Yamaha Grizzly 350 IRS 4X4: 2007-2011
Yamaha Moto 4 350: 1987-1995
Yamaha Raptor 350 Special Edition II: 2007
Yamaha Raptor 350 Special Edition: 2005-2007
Yamaha Raptor 350: 2004-2011
Yamaha Warrior 350: 1987-2004
Yamaha Wolverine 350 2WD Deep Purplish Blue Solid: 2009
Yamaha Wolverine 350 2WD Sport: 2007
Yamaha Wolverine 350 2WD: 2006-2009
Yamaha Wolverine 350 4X4: 1995-2005