Upgrade the top end of your compatible Yamaha YZ250F with the Cylinder Works 20002-K03HC High-Compression Standard Bore Cylinder Kit. Designed for 2008–2013 Yamaha YZ250F models, this complete kit includes a standard-bore cylinder, matched Vertex high-compression piston kit, and the required top-end gaskets for a dependable engine rebuild. The 13.9:1 compression ratio is engineered to support strong performance while maintaining the fit and appearance of the original equipment cylinder.
The Cylinder Works cylinder features a nickel silicon carbide plated bore for extended service life, consistent performance, and improved durability under demanding riding conditions. The cylinder is designed to look like the stock component, helping maintain a clean factory-style installation. No machine work is required for installation when used with the specified standard-bore application and compatible components. The matched Vertex piston helps promote longevity, performance, and reduced engine noise.
Fitment: This Cylinder Works kit fits 2008, 2009, 2010, 2011, 2012, and 2013 Yamaha YZ250F motorcycles. The kit includes the cylinder, piston kit, and gaskets. The top-end gasket kit does not include valve stem seals. Replacement pistons, gaskets, and ring sets are available separately for future service needs. Manufacturer part number: 20002-K03HC. Vendor part number: 422-20002KH3.
Features:
- Complete high-compression standard-bore cylinder kit
- Fitment: 2008–2013 Yamaha YZ250F
- Brand: Cylinder Works
- Manufacturer part number: 20002-K03HC
- Vendor part number: 422-20002KH3
- Compression ratio: 13.9:1
- Includes cylinder, matched Vertex piston kit, and gaskets
- Nickel silicon carbide plated cylinder bore for extended service life
- Stock-style cylinder appearance
- No machine work required for the specified standard-bore application
- Top-end gasket kit does not include valve stem seals
- Replacement piston, gasket, and ring sets are available
Fitment:
2008 Yamaha YZ250F
2009 Yamaha YZ250F
2010 Yamaha YZ250F
2011 Yamaha YZ250F
2012 Yamaha YZ250F
2013 Yamaha YZ250F