Cylinder Works 08-13 Yamaha YZ 250 F 250cc Standard Bore Cylinder Kit 13.5:1 Comp. 77mm

The Nickel Silicon Carbide (NSC) electroplate bore on this Cylinder Works cylinder is a key detail that sets it apart. This advanced plating process allows for much tighter tolerances during manufacturing, which translates directly into lower friction as the piston moves. It also means extreme durability, so you can expect this cylinder to hold up well over time, even under demanding use.

This kit is designed to bring your 2008-2013 Yamaha YZ 250 F back to its original horsepower and performance levels, offering a competitive alternative to OEM parts. It includes a cast aluminum cylinder, a Vertex piston, and all the necessary gaskets to get the job done. The cylinder is precision diamond honed to exact dimensions, ensuring a proper surface finish that helps the piston rings seal effectively and retain oil where it needs to be. With a 13.5:1 compression ratio and a 77mm standard bore, this kit is built to restore the power you expect from your bike.

When you're rebuilding the top end of your Yamaha YZ 250 F, a well-built cylinder kit like this one is crucial. It's a solid option for getting your machine back on the track or trail with renewed performance. Make sure to refer to the manufacturer's installation instructions for specific details on assembly and break-in procedures.