Athena 19-23 Yamaha YZ 85 47.46mm Bore Cast 2-Stroke Top End Piston Kit w/Top End Gasket Kit

Starting with a 47.46mm bore diameter, this Athena cast 2-stroke piston kit is built to work seamlessly with the included top end gasket kit. Athena handles the entire development process for both the piston and its compatible gaskets, ensuring they are engineered to function together perfectly. This approach means you get a well-tuned top end replacement that offers notably high performance and maximum reliability for your 2019-2023 Yamaha YZ 85.

The kit includes a cast 2-stroke piston, which is a common and reliable choice for many applications. By combining the piston and gasket set from a single manufacturer that tests and develops them internally, you can expect a precise fit and optimal function. This integrated approach helps ensure that when you replace your top end components, the new parts work in harmony to deliver the performance and dependability your bike needs.