Athena P400250100030 300cc Big Bore Cylinder Kit (85mm Bore) - Forged Piston Performance Upgrade, Converts 250cc to 300cc, Compatible with Kawasaki KX250 & KX250X 2023-2024 Power Source secure the cover with the

secure the cover with the included mounting screw

A true multi-tasker

while the 48 in

The 16110T10 model is a trusted choice for racers seeking a competitive edge

A hidden battery pass-thru pocket construction allows for front or back battery placement

Athena P400250100030 300cc Big Bore Cylinder Kit (85mm Bore) - Forged Piston Performance Upgrade, Converts 250cc to 300cc, Compatible with Kawasaki KX250 & KX250X 2023-2024 Power Source secure the cover with theUPGRADE 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