The Namura Standard Bore Cylinder Kit for the 2010–2013 Honda CRF250R is a complete replacement kit designed for direct bolt-on installation, providing OEM-level performance and reliability. This kit includes a high-quality cylinder and a Namura piston, ensuring durability and efficiency. Nickel Silicon Carbide plating and precise honing guarantee a perfect fit and long service life.

Features

• Direct bolt-on cylinder, requiring no replating.


• Nickel Silicon Carbide plating for enhanced durability.


• Honed to exact dimensions for easy piston installation.


• Sleeve specifications: Nikasail coating, hardness HV500–600, thickness 0.08 ± 0.02 mm.


• Cylinder material: JIS AC4B-T6 aluminum with a hardness rating of HR65 and above.

Specifications

• Bore Size: 76.80 mm

Cross Reference OEM Part Numbers

• Honda: 12100-KRN-A40, 10007-K01

Vehicle Compatibility

• Honda CRF250R (2010–2013)