Athena 97-01 Yamaha YZ 125 53.95mm Bore 2T Cast Piston

Athena has been making motorcycle spare parts for over 40 years, and they're known for their reliable components. This cast piston is built for your 1997-2001 Yamaha YZ 125. It's a 2-stroke piston with a 53.95mm bore, designed to match the reliability of your original equipment piston while offering better resistance and performance.

These pistons are made from special high-performance alloys that include nickel, silica, and aluminum. They're machined using advanced CNC tools to ensure very tight dimensional tolerances, less than 0.01 mm. This precision helps create a smooth profile for regular flow and proper flame propagation, which is key for consistent power delivery. Some pistons also get a molybdenum disulfide coating on the skirts, applied through screen printing, to further cut down on friction and boost both durability and performance.