78mm Stock Bore Cylinder Piston Top End Rebuild Kit Set fit for Honda CRF250R 04-09 57879237

Application:

Fit fit for Honda CRF250R 2004-2009
Fit fit for Honda CRF250X 2004-2017

OE/Part number:
Cylinder: 12100-KRN-670, 12100-KRN-732
Cylinder Base Gasket: 12191-KRN-731
Cylinder Head Gasket: 12251-KRN-671, 12251-KRN-731
Piston: 13101-KRN-670, 13101-KRN-850
Pin, Piston: 13111-KRN-850
Piston Ring Set: 13011-KRN-A10, 13011-KRN-850
Circlips, piston (2): 13115-KM7-700
Exhaust Gasket: 18291-KPS-900
Chain Tensioner Gasket: 14560-MEN-671

Specification:

Condition: Brand New
Material: Aluminum, Steel
Displacement: 249cc
Engine type: 4-Stroke
Bore Type: Standard Bore
Bore diameter: 78.00mm
Stroke: 52.2 mm
Pin diameter: 16mm
Pin Length: 40mm

Feature:

SUPERIOR PERFORMANCE
Premium aluminum & steel construction
Enhanced combustion efficiency fit for optimal horsepower
Advanced heat dissipation design fit for stable performance

COMPLETE KIT INCLUDES
Full cylinder assembly with 78mm bore diameter
High-quality piston set with 16mm wrist pin
Comprehensive gasket kit fit for complete installation

DURABILITY FOCUSED
Heavy-duty wear-resistant materials
Built to withstand high temperatures
Engineered fit for extended service life

QUALITY ASSURANCE
Meets OEM standards (OE: 12100-KRN-670 series)
Precision manufactured to exact specifications
Each component thoroughly tested fit for reliability

Package Included:

1x Cylinder
1x Piston
1x Piston Ring Set
1x 16mm Wristpin
1x Circlip(2)
1x Cylinder Base Gasket
1x Cylinder Head Gasket
1x Exhaust Gasket
1x Chain Tensioner Gasket

(Comes exactly as pictured.)

Note:

1. Fitment above is fit for reference only, please check the part number and the size of cylinder bore before you purchase.
2. Professional installation is highly recommended.
3. Please allow 1-3mm error due to manual measurement, thanks fit for understanding.
4. Please kindly understand that the actual color may slightly vary from presented pictures due to different monitor.