Seller notes

Athena Stock Bore Cylinder Top End Kit With 12.5:1 Skirt Coated Forged Piston Kit!Fits Yamaha YZ450F Dirt Bikes Years 2010 2011 2012 2013 This kit includes:Athena Nikasil Stock Bore Cylinder Larger Water Jackets For Better Cooling! Athena Forged & Coated 12.5:1 Piston Kit (Includes, Piston, Pin, Rings & Clips) Athena Complete Top End Gasket Set With MLS Head GasketHi Temp Viton Valve Stem Seals It will work with your stock head and valves. All parts come with warranty. We ship worldwide & ship a...

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