This is our Chain Sprocket Set. The specification is 428H-128L-40-14T.We can supply for many different types of chain sprocket set. It can match with all kinds of Motorcycle. And our sprocket has super hardness and wear resistance. Competitive price and quality assurance. The chains has various pitches and thicknesses to suit different types of motorcycles.It has the characteristics of long service life, stable performance, high average tensile strength, pre-stretched fatigue resistance, diverse models and reasonable prices.