Seller notes

Athena 102mm 500cc Big Bore Cylinder Top End Kit!This is the best and most reliable big bore kit on the market!Fits Yamaha YZ450F Dirt BikesYears 2010 2011 2012 2013 2014 2015 2016 2017 This kit includes:102mm 500cc Nikasil Athena Big Bore CylinderLarger Water Jackets For Better Cooling!Athena 102mm Coated Piston Kit (Includes, Piston, Pin, Rings & Clips) 12.3:1 CompressionAthena Complete Top End Gasket SetIt will work with your stock head and valves. All parts come with warranty.We ship worldwi...

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