Athena 06-09 Honda CRF 250 R 77.98mm Bore 4T Forged Racing Piston

This is an Athena 4-stroke forged racing piston designed for the 2006 through 2009 Honda CRF 250 R. It features a 77.98mm bore, which is a common size for performance builds on this model. Forged pistons are known for their strength and durability, making them a solid choice when you're looking to get the most out of your engine.

Athena makes these pistons using a special aluminum alloy that includes nickel and silica. This material choice helps ensure the piston is as reliable as the original equipment part, but with added resistance and better performance. The manufacturing process uses advanced CNC machining to hold very tight tolerances, less than 0.01 mm, which is important for a good seal and efficient combustion. The smooth surface profile also helps with regular airflow and proper flame propagation inside the cylinder.