In Stock Engine parts Big bore kit 125cc Dio50 water cooling with 54mm ceramic cylinder and 53mm crankshaft 222358 USD 750 Big bore water cooled kit 125cc for Honda Dio50 Af18. Kit includes: l/c ceramic cylinder kit 54mm, cylinder head, forged crankshaft 53mm +4 long stroke, bearings, spark plug, oil seals and needle roller. Add to cart