Athena Generic XOR Competition 50 40mm Bore 50cc Standard Bore Cylinder Kit

Athena is known for making reliable engine components, and this Standard Bore cylinder kit is a great example of that. If you're rebuilding the top end of your 50cc engine, this kit is designed to give you the same performance and smoothness as the original parts, but with some updated materials for improved reliability.

The cylinder itself is made from lightweight aluminum and features a nickel-silicon coating in the barrel. This coating helps reduce friction, which means less wear and tear over time. The kit also comes with a complete piston designed for even less friction, along with the piston pin, rings, and all the gaskets you'll need to get the job done. It's a well-built package that aims to get your engine running smoothly again.