JE Pistons / Hotrods Complete 100mm Bore 500cc Stroker Motor Rebuild Kit! This is the best and most reliable rebuild kit on the market! Fits Honda CRF450X Dirt Bikes. Years 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017.100mm Nikasil Big Bore Cylinder. JE 12.5:1 Piston Kit (Includes, Piston, Pin, Rings & Clips). Hotrods Heavy Duty +3mm Stroker Crankshaft Assembly With Rod. Hotrods Heavy Duty Main Bearings Set.
Hotrods Bottom End End Engine Seal Kit. Hotrods Complete Motor Gasket Set. It will work with your stock head and valves.