Athena 15-18 Yamaha WR 250 F 77mm 250cc Standard Bore Cylinder Kit w/Gaskets (Excl Piston)

The barrel on this Athena cylinder kit features a nickel-silicon coating, a tough material that helps reduce friction and wear. This is a standard bore kit, meaning it's designed to replace your original cylinder with the same dimensions, ensuring it fits right and performs like the factory part. It’s built for riders who need to restore their Yamaha WR 250 F's engine to its original capabilities.

Athena uses a lightweight aluminum cylinder for this kit, which helps with heat dissipation compared to heavier cast iron options. The nickel-silicon coating on the barrel is a key detail that contributes to the extreme reliability and smooth operation Athena aims for. This kit is put together to get your bike back to its factory performance level, making it a solid option for engine rebuilds.

This kit comes with the aluminum cylinder, piston pin, rings, and all the gaskets you'll need for installation. You'll want to make sure you have a compatible piston for this standard bore size before you begin.