Athena 20-22 Honda CRF250R 79mm Bore Standard Bore Cylinder Kit

The Athena P400210100071 is a 79mm Standard Bore Cylinder Kit. It is engineered in Italy by Athena's R&D Department and features a lightweight aluminum cylinder, a barrel with nickel-silicon coating for smoothness and optimal wear resistance, and a piston designed to reduce friction. The kit includes the high-quality aluminum cylinder with standard bore, the complete piston with the piston pin and rings, and all the necessary gaskets. All components are developed to withstand high temperatures, pressures, and stresses. This cylinder kit can be installed without making any changes to the engine crankcase. It is a Race Use ONLY Product and not intended for street use.