OEM-style standard bore kits include a cast aluminum Cylinder Works cylinder, Vertex Piston and gaskets needed to restore horsepower and performance, as a competitive price point, compared to OEM options.
This Part Fits:
Year
Make
Model
Submodel
2007-2015
Yamaha
WR450F
Base
2009-2019
Yamaha
YFZ450R
Base
2010-2011
Yamaha
YFZ450X
Base
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