motorcycle chain 1.motorcycle chain with high quality 2.motorcycle chain with heat treatment 3.materail:40mn High quality 420 ... ,428,428H,415,415H,520,530 motorcycle chain Our factory for motorcycle chain:About our company:Specializing in manufacturing and ... parts, such as motorcycle cylinder kits, piston kits, crankshaft, timing chain, valve, carburetor , lights series, other motorcycle parts and so ...