Athena 04-04 Aprilia MX 50 50mm Bore 80cc Big Bore Cylinder Kit

This Athena big bore cylinder kit uses a 50mm bore, increasing the engine's displacement to 80cc for your Aprilia MX 50. Athena has been developing aftermarket cylinder parts for over a decade, with their R&D department in Italy handling the design and testing of each piece. This focus means they've built up a lot of knowledge and use advanced tools to create these performance components.

The cylinder itself is coated with motor-nicksil, a special nickel-silicon blend developed by Athena. This coating is applied to achieve a smooth surface finish, which helps with optimal wear resistance over time. This is important for keeping the engine running smoothly and reliably as you put miles on it.

This kit is designed to be a direct replacement for your stock cylinder, though it significantly increases the engine's displacement. It's a substantial upgrade for riders looking to get more performance out of their Aprilia MX 50. Please note that this kit is not CARB approved and cannot be shipped to California.