Athena 19-23 Yamaha YZ 250 F 77mm Bore 250cc Stock Bore Complete Cylinder Kit

Athena is a well-known name in high-performance engine components, and this complete cylinder kit for your 19-23 Yamaha YZ 250 F carries on that tradition. This kit is designed to give you the same performance you expect from your original spare parts, while also offering extreme reliability and smooth operation. It’s a solid choice if you’re looking to replace a worn-out cylinder or rebuild your engine to factory specifications.

What makes this kit work so well is the combination of its lightweight aluminum cylinder and the nickel-silicon coating on the barrel. This coating is known for its durability and low friction, which helps the engine run smoother and last longer. The piston included in the kit is also specifically designed to reduce friction, further contributing to the engine's efficiency and responsiveness. Everything you need to get your engine back to running order is included: the standard bore aluminum cylinder, a complete piston assembly with pin and rings, and all the necessary gaskets for a proper seal.

When you're installing this kit, remember that it's designed as a stock bore replacement, meaning it matches the original dimensions of your Yamaha YZ 250 F's engine. This makes installation straightforward, as it's intended to fit right in without major modifications. Just be aware that this kit is not CARB approved, so it cannot be shipped to California.