In Stock Engine parts Big bore kit 125cc DIO50 AF18 water cooling version with 34mm manifold, oversized... 222213 USD 1,570 Big bore kit for Honda DIO50 AF18 125cc engine modification. Set supplied with:1.Water cooling cylinder kit 54.5mm BWSP;2.Forged crankshaft 53.4mm+4.4mm JISO;3. Cnc machined head BWSP;4. Intake manifold 30-34mm;5. Oversized clutch bell JISO;6. Oversized clutch pads JISO;7. Variator 92mm JISO;8. Perfomance torque driver with high-angle grooves JISO;9.... Add to cart