1-Namura Piston
1-Namura Ring Set
1-Namura Wrist Pin
2-Namura Circlips
1-Namura Top End Gasket Set with Valve Seals
Cast Piston has Super-High Silicone Content for Additional Strength
Piston Skirts are Molybdenium Teflon Coated, 
to Minimize Resistance/Wear & Provide Extended Life
Piston Dome is Anodized for Superior Heat Resistance & Longer Lifespan
83.50 mm (.020) BORE
(Piston Diameter Size is 83.45 mm)

1987 - 1999 Yamaha Big Bear 350 4x4 (YFM350FW)
1996 - 1999 Yamaha Big Bear 350 2x4 (YFM350U)

2004 - 2006 Yamaha Bruin 350 4x4 (YFM350FA)
2004 - 2006 Yamaha Bruin 350 2x4 (YFM350A)

2007 - 2011 Yamaha Grizzly 350 2x4 (YFM350G)
2007 - 2014 Yamaha Grizzly 350 4x4 (YFM350FG)
2007 - 2011 Yamaha Grizzly 350 4x4 IRS (YFM350FGI)

1987 - 1995 Yamaha Moto-4 350 (YFM350ER)

2004 - 2013 Yamaha Raptor 350 (YFM350R)

1987 - 2004 Yamaha Warrior 350 (YFM350X)

1995 - 2005 Yamaha Wolverine 350 4x4 (YFM350FX)
2006 - 2009 Yamaha Wolverine 350 2x4 (YFM350X)



 




 

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Photo Above is Universal