Athena 18-19 Honda CRF 250 R 78.95mm 4T Forged Piston

This is a 78.95mm 4-stroke forged piston from Athena, designed for the 2018 and 2019 Honda CRF 250 R. Pistons are critical engine components that transfer the force from combustion to the crankshaft, and this Athena piston aims to match the reliability of your original equipment while offering enhanced durability and performance.

Athena uses a reverse extrusion process to create these pistons from a special alloy of nickel, silica, and aluminum. This material blend is chosen for its strength and heat resistance. The pistons are then machined with very tight tolerances, less than 0.01 mm, ensuring a precise fit within the cylinder bore. A smooth piston crown profile is also incorporated to promote regular fuel flow and efficient combustion, which can contribute to better overall engine operation.

This piston is a direct replacement for the stock unit in the specified Honda models. Ensure you have the correct tools and procedures for engine disassembly and reassembly when installing a new piston.