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 With its impressive durability

With its impressive durability

This factory pre-oiled

This increased performance of the lithium-ion battery gives you the same power and runtime of an M18 XC battery in a lighter and more compact package

Designed for use on calipers

Crafted from high-strength PA6 polyamide

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 With its impressive durabilityUPGRADE 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