YZ250 265cc big bore cylinder kit 1999-2019 68.5mm wiseco piston Phathead racing head

YZ250 1999-2016 68.5mm 265cc Big Bore Kit with Phathead CNC Racing cylinder head with replaceable domes. Wiseco piston kit and top-end gasket set

Includes: Nikasil replated 68.5mm cylinder

Wiseco 68.5mm forged piston kit 804M06850 

 Cometic top-end gasket set C7855 

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