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Yamaha YZ450F YZ 450F 500cc DRAG RACE Big Bore Athena Cylinder 14 CP Piston Kit
Athena / CP Carrillo / AZ Quad Parts Conglomerate Kit. 102mm 500cc Big Bore Cylinder Top End Kit!
This Is The Best Big Bore Kit On The Market And Is the Best Set Up For Drag Racing! Fits Yamaha YZ450F & YZ450FX Dirt Bike Models. Years 2010 2011 2012 2013 2014 2015 2016 2017.
102mm 500cc Nikasil Athena Big Bore Cylinder. Larger Water Jackets For Superior Cooling! CP Cariilo Piston Kit (Includes, Piston, Pin, Rings & Clips). 14:1 Compression Ratio (Race Gas ONLY).Piston Kit Will Handle Up To +2mm Bigger Valves! Athena Complete Top End Gasket Set.
This Kit will work with your stock head and valves.