Athena P400210100023 163.5cc Big Bore Cylinder Kit (69mm Bore) - Forged Piston Performance Upgrade, Converts 150cc to 163.5cc, Compatible with Honda CRF150R 2007-2014 Antii-seize and debris during off-road adventures

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Athena P400210100023 163.5cc Big Bore Cylinder Kit (69mm Bore) - Forged Piston Performance Upgrade, Converts 150cc to 163.5cc, Compatible with Honda CRF150R 2007-2014 Antii-seize and debris during off-road adventuresUPGRADE YOUR DIRT BIKE TO THE NEXT LEVEL OF PERFORMANCE Extract massive power, aggressive low end torque, and unmatched acceleration from your 150cc four stroke engine with the Athena Big Bore Cylinder Kit (Part No. P400210100023), a premium race proven package engineered in Italy to seamlessly convert your factory setup into a high revving, high output 163. 5cc powerhouse. Entirely cast from high grade aluminum and treated with a specialized Motor