Athena P400485100076 2T Cast Piston 47,46 mm for OE CylinderAthena P400485100076 2T Cast Piston 47,46 mm for OE Cylinder Athena has been constantly investing in cylinder aftermarket replacement parts for more than ten years, to improve their production and performance. All the cylinders are entirely engineered in Italy by Athenas R&D Department which has a strong internal know how and cutting edge tools to design and test each piece. They are coated with motor nicksil, a nickel silicon coating developed by