Athena 96-98 Aprilia 50 2T 47.55mm Bore Cast Piston (For Athena Big Bore Cylinder Kit)

If you're upgrading your Aprilia 50 2-stroke with an Athena Big Bore Cylinder Kit, this Athena cast piston is the specific component you'll need. It's designed to work seamlessly with those kits, ensuring proper fitment and function for your engine's rebuild.

Athena makes these pistons using special aluminum alloys with nickel and silica, aiming for the same reliability as original equipment but with added resistance and performance. The manufacturing process uses CNC machining to hold very tight tolerances, less than 0.01 mm, which helps ensure a smooth profile for regular airflow and proper flame spread inside the cylinder. Some pistons also get a molybdenum disulfide coating on the skirt to further cut down on friction, which can help with both performance and how long the piston lasts.