- Big Bore Kit
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- Warranty
09-15 Kawasaki KX450F KX 450F 100 490cc Athena Big Bore Top Cylinder Piston Kit
Athena 100mm 490cc Big Bore Cylinder Top End Kit! This is the best and most reliable big bore kit on the market!
Fits Kawasaki KX450F Dirt Bikes. Years 2009 2010 2011 2012 2013 2014 2015. 100mm 490cc Nikasil Athena Big Bore Cylinder. Athena 100mm 12:1 Piston Kit (Includes, Piston, Pin, Rings & Clips). Athena Complete Top End Gasket Set.
Larger Water Jackets To Keep The Motor Cooler. It will work with your stock head and valves.