Athena 2004 Aprilia MX 50 40mm Bore 50cc Standard Bore Cylinder Kit

The barrel on this Athena cylinder kit features a nickel-silicon coating, a tough material chosen for its durability and ability to work well with the piston. This coating helps reduce friction, which means the engine can run smoother and potentially last longer. It's designed to match the original performance specifications for your Aprilia MX 50, making it a reliable choice for restoring your engine.

This kit is built with an aluminum cylinder, which is lighter than cast iron and helps with heat dissipation. The piston included is specifically designed to further minimize friction during operation. When you're rebuilding the top end of your engine, having a well-made cylinder and piston assembly is crucial for getting it back to running right. This kit aims to provide that, ensuring your engine runs reliably and smoothly.

Inside this kit, you'll find everything you need to get the cylinder replaced: the aluminum cylinder itself, a complete piston assembly (including the piston pin and rings), and all the necessary gaskets to seal everything up properly. This makes it a comprehensive solution for your engine repair. Please note that this kit is not CARB approved and cannot be shipped to California.