Cylinder Works 01-04 Yamaha WR 250 F 250cc Standard Bore Cylinder Kit 12.7:1 Comp. 77mm

This kit from Cylinder Works gives you everything you need to get your 2001-2004 Yamaha WR 250 F back to its original performance level. Inside the box, you'll find a cast aluminum Cylinder Works cylinder, a Vertex piston, and all the necessary gaskets to complete the job. It’s designed as an OEM-style replacement, offering a way to restore horsepower and performance without the cost of a genuine Yamaha part.

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. It also contributes to extreme durability, helping your engine run strong for a long time. To ensure the piston rings seal properly and the cylinder walls hold oil effectively, the bore is precision diamond honed to exact dimensions and the right surface finish.

This kit is a solid option for anyone looking to rebuild their engine and get back on the trail with confidence. It's a complete package that addresses the core components needed for a cylinder replacement.