Product Detail Honda Motorcycle 2 Stroke Offroad Part Number 8151D100 Bore Size 57 mm Clearance 0.06 mm Compression Height 28.8 mm Compression Ratio Cylinder No. 1 Cyl./Kit Displacement 123 cc Dome Volume Engine Code Piston Weight Stroke Valves/Cylinder Gasket P/N Lock P/N CW14 Pin P/N WP025 Ring Set P/N RDB5700 Rod P/N Product Fitment