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The oversized valves allow more air into the engine for better breathing
Fits Honda CRF450R Years 2002 2003 2004 2005 2006 2007 2008
Lighter Than OEM
Spark plugs
07-15 Honda CRF230F CRF 230F 67mm 233cc Athena Big Bore Cylinder Piston Top Kit KLR650 The oversized valves allow moreAthena 233cc Big Bore Cylinder Kit for Honda CRF230F 2007 2015 0715 Honda CRF230F Athena 67mm Big Bore Cylinder Piston Top End Kit 233cc Power Upgrade Engineered in Italy Unlock serious performance gains with the Athena Big Bore Cylinder Kit for the Honda CRF230F. Precision engineered in Italy, this 67mm top end kit increases displacement to 233. 4cc, delivering stronger torque and smoother power throughout the entire RPM range while maintaining OEM
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