Upgrade the top end of your Yamaha 250F engine with the Cylinder Works Standard Bore High-Compression Cylinder Kit, manufacturer part number CW20013K01HC. This complete kit is designed for select Yamaha YZ250F, YZ250FX and WR250F models and includes a standard-bore cylinder, matched Vertex high-compression piston kit and the required top-end gaskets. The 14.7:1 compression ratio supports strong engine performance while maintaining a stock-style appearance.
The Cylinder Works cylinder is nickel-silicon-carbide plated for extended service life, consistent bore performance and improved durability. The matched Vertex piston is selected to promote reliable operation, reduce engine noise and provide long-lasting performance. With the included cylinder, piston components and gaskets, this kit is a practical replacement or performance-oriented top-end solution for compatible Yamaha engines. No machine work is required for installation when used with the appropriate standard-bore application.
Fitment: Fits 2019-2022 Yamaha YZ250F, 2020-2022 Yamaha YZ250FX and 2020-2022 Yamaha WR250F models. Verify the year, model and engine specifications before ordering. This kit is intended for standard-bore applications; the top-end gasket kit does not include valve stem seals. Replacement pistons, gaskets and ring sets are available separately for future service needs.
Features:
- Complete standard-bore high-compression kit
- Includes cylinder, matched Vertex piston kit and gaskets
- 14.7:1 compression ratio for enhanced engine performance
- Nickel-silicon-carbide-plated cylinder for extended durability
- Stock-style cylinder appearance
- Matched piston design helps promote longevity, performance and reduced engine noise
- No machine work required for compatible standard-bore applications
- Replacement piston, gasket and ring sets are available
- Top-end gasket kit does not include valve stem seals
- Fits 2019-2022 Yamaha YZ250F, 2020-2022 Yamaha YZ250FX and 2020-2022 Yamaha WR250F
Fitment:
2019 Yamaha YZ250F
2020 Yamaha WR250F
2020 Yamaha YZ250F
2020 Yamaha YZ250FX
2021 Yamaha WR250F
2021 Yamaha YZ250F
2021 Yamaha YZ250FX
2022 Yamaha WR250F
2022 Yamaha YZ250F
2022 Yamaha YZ250FX
2023 Yamaha WR250F
2023 Yamaha YZ250F
2023 Yamaha YZ250FX
2024 Yamaha WR250F
2024 Yamaha YZ250F
2024 Yamaha YZ250FX