Seller notes

This is a complete kit including everything needed to bolt on a 500cc big bore kit for YFZ450 (carb models) from 2004-2013. Complete bolt on kit includes a 100mm cylinder, CP 100mm Piston kit, and Cometic gaskets.Custom designed CP piston is a light weight design, with 14:1 compression on stock stroke crank, and built in clearances for big valves, big cams, and stroker cranksCometic gasket kit includes head and base gaskets. (always check all clearances during assembly to ensure proper specs due...

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