All pistons are heat-treated with a T-5 hardening and tempering cycle
All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
Big Bore pistons increase engine's displacement, torque, and peak horsepower
Kits include piston, rings, wrist pin and circlips
Product Note:
Specification
Details
Compression Ratio
12.0:1
Displacement
478cc
Piston Diameter
97.96mm
Size Over Standard
3 mm Larger than Stock
Vehicle Fitment
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
Yamaha
YFZ450 ATV 2004-2009, 2012-2013
YFZ450R ATV 2009-2023
YFZ450X ATV 2010-2011
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Questions & Answers
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