Seller notes

Cylinder Works Big Bore 478cc Cylinder Kit Fits:2004-2013 Yamaha YFZ 450 (+3mm Big Bore Kit) Makes 468cc in 04-05 models. Makes 478cc in 06-12 models. 12.0:1 comp, 98mm. Uses Vertex #23403. Includes Cylinder, Piston, Rings, Pin, Clips, Gaskets Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise Nickel silicon carbide-plated for long...

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