10-17 ATHENA YZ450F YZ 450F 97mm JE 12.81 Race Piston Stock Bore Cylinder Kit

Brand New Complete Top End Athena / JE Stock Bore Kit. Fits Yamaha YZ450F Dirt Bike Models. Years 2010 2011 2012 2013 2014 2015 2016 2017 ONLY.

Add Amazing & Reliable Power With The Best Components In The Industry! This Complete Big Bore Top End Kit Includes. Athena 97mm Big Bore Nikasil Plated Cylinder. Larger Water Jackets To Keep The Motor Cooler! JE 12.8:1 Piston Kit (Includes Piston, Rings, Pin & Clips) (Perfect For Pump Gas).

Athena Complete Top End Gasket Kit. Piston uses pump gas or race gas.

---