Athena / CP Carrillo / AZ Quad Parts / Hotrods Full Motor Rebuild Kit. 100mm 490cc Big Bore Cylinder Motor Rebuild Kit! This Is The Best Big Bore Kit On The Market! Fits Honda CRF450R Years 2013 2014 2015 2016 ONLY. 100mm 490cc Nikasil Athena Big Bore Cylinder.
Larger Water Jackets For Better Cooling! CP Carrillo Piston Kit (Includes, Piston, Pin, Rings & Clips). 13.5:1 OR 14:1 Compression Ratio (We Can Set This For Pump Or Race Gas, Please Specify At Checkout). Piston Kit Will Handle Up To +2mm Bigger Valves! Athena Complete Top End Gasket Set. Hotrods Heavy Crankshaft & Connecting Rod. It will work with your stock head and valves.