Seller notes

FITS ALL YAMAHA YFZ450 FI MODELS AND YEARS! 520cc OF BOLT ON POWER!98mm NEW DESIGN big bore cylinderBRAND NEW OEM CRANKCASESWiseco JE or CP forged piston**Hi temp piston ringsChrome wristpinCirclips+5mm Crankworks stroker crankshaft with rod assembled and welded at pinStage 3 HotcamsPro-X valve springsOEM retainers and collarsPro-X intake and exhaust valvesKibblewhite viton valve stem sealsMAXLOCK head stud kit - LIFETIME WARRANTY*Clutch kit (fibers, steels, springs)Crank bearingsCrank balancer ...

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