short pitch420 motorcycle chain 1,OEM offered 2,material will be 40mn/A3 3.packing:plastic bag or Customer design 4.hot sal 420 roller chain 1,chain material:40mn 2,the roller chain quality have A,B,C three grade 3,Original Equipment Manufacture Industrial chain&Motorcycle chain We are manufacturing all kinds of motorcycle chains ,satandard or OEM are accepted 1)Type :420,420H,428,428H,530,630 ...