Athena 97-04 Yamaha YZ 125 2T Forged Racing Piston Bore 53.95mm for OE Cylinder

This is a forged racing piston from Athena, designed for your 1997-2004 Yamaha YZ 125 2-stroke. It has a bore size of 53.95mm and is made to fit the original cylinder. Athena has been making motorcycle spare parts for over 40 years, and these pistons are built using advanced CNC machining tools to ensure very tight dimensional tolerances, less than 0.01 mm. They are constructed from special high-performance alloys that include nickel, silica, and aluminum. This combination aims to provide the same reliability as the original piston while offering improved resistance and excellent performance.

The design of this piston features a smooth profile, which helps ensure a regular flow of the air-fuel mixture and promotes proper flame propagation during combustion. This attention to detail in the piston's shape can contribute to more consistent engine operation and better power delivery.