Athena 98-00 Aprilia 51 LC 50 47.6mm Bore 70cc 10mm Pin Big Bore Cylinder Kit w/Modular Head

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 Athena's 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 Athena to obtain smoothness and optimal wear resistance.