The Cylinder Works Cylinder Head Kit (CH1003-K01) is a premium replacement cylinder head designed for select Honda CRF250R and CRF250X models. Manufactured with precision and high-quality materials, this cylinder head kit provides a reliable solution for performance rebuilds. It features C630 valve seats and guides, a competition valve job, and a design optimized for higher lift cams, making it an excellent choice for enhancing engine efficiency and durability.

Features:

• New replacement cylinder head compatible with Honda CRF250R and CRF250X models.


• Includes cam caps and cam cap bolts for secure installation.


• Features C630 (nickel/aluminum/bronze) valve seats and guides for superior durability.


• Competition valve job for optimized engine performance.


• Shortened valve guides to support higher lift cams.


• Unshrouded combustion chamber and blended bowl seat to port for improved airflow.


• Stock-shaped ports for compatibility with standard configurations.


• Made in the U.S.A.

Note:

• Does not include valves, springs, or lifters; these components are sold separately.

Vehicle Compatibility:

• Honda CRF250R: 2004–2007


• Honda CRF250X: 2004–2006

Cross-Reference Part Number:

• Cylinder Head Assembly: 12010-KRN-A00