Athena P400250100030 300cc Big Bore Cylinder Kit (85mm Bore) - Forged Piston Performance Upgrade, Converts 250cc to 300cc, Compatible with Kawasaki KX250 & KX250X 2023-2024 Utility Knife making blade changes and fence

making blade changes and fence movements a seamless process

and debris-filled trails

This factory pre-oiled

Maglock has been tested in some of the most extreme levels of racing and passed with flying colors

Athena P400250100030 300cc Big Bore Cylinder Kit (85mm Bore) - Forged Piston Performance Upgrade, Converts 250cc to 300cc, Compatible with Kawasaki KX250 & KX250X 2023-2024 Utility Knife making blade changes and fenceUPGRADE YOUR DIRT BIKE TO THE NEXT LEVEL OF PERFORMANCE Extract massive power, aggressive low end torque, and unmatched acceleration from your 250cc four stroke engine with the Athena Big Bore Cylinder Kit (Part No. P400250100030), a premium race proven package engineered in Italy to seamlessly convert your factory setup into a high revving, high output 300cc powerhouse. Entirely cast from high grade aluminum and treated with a specialized Motor