Seller notes

Athena 100mm 490cc Big Bore Cylinder & JE 12.5:1 Piston Top End Kit!This Is The Best Big Bore Kit On The Market & Is Perfect For Snow Bikes Conversions!Fits Honda CRF450R Years 2002 2003 2004 2005 2006 2007 2008 This kit includes:100mm 490cc Nikasil Athena Big Bore CylinderLarger Water Jackets To Keep The Motor Cooler!JE Piston Kit (Includes, Piston, Pin, Rings & Clips) 12.5:1 Compression RatioPiston Kit Will Handle Up To +2mm Bigger Valves!Athena Complete Top End Gasket Set We ship worldwide & ...

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