Cylinder Works 18-19 Yamaha WR 250 F 250cc Standard Bore High Compression Cylinder Kit 14.2:1 Comp.

This Cylinder Works cylinder kit gives you everything you need to get your 2018-2019 Yamaha WR 250 F back to its original performance, or even better. Inside this box, you'll find a cast aluminum Cylinder Works cylinder, a Vertex piston, and all the necessary gaskets to complete the job. It's a complete package designed to restore lost horsepower and bring your engine back to life, offering a competitive alternative to OEM parts.

The cylinder itself is built with a nickel silicon carbide (NSC) electroplate bore. This advanced plating allows for very tight tolerances, which means less friction as the piston moves up and down. That lower friction translates to better efficiency and extreme durability for the cylinder wall. To ensure optimal performance right from the start, the bore is precision diamond honed to exact dimensions. This careful honing process creates the perfect surface finish for the piston rings to seal against, ensuring good compression and proper oil retention for the life of the engine.

With a 14.2:1 compression ratio, this kit is designed for riders looking for improved performance over stock. It's a solid option for rebuilding your engine and getting back on the trails with renewed power.