motorcycle chains 420 1) material:40MN 2) pitch:12.7mm 3) plate thickness:1.5mm 4) colors: natural,blue,black,yellow Motorcycle chains 4201)material : 40mn2)color : nature,black,blue,yellow3)advanced heat treatment process, mesh belt conveyor furnace use4)standard:ISO/ DIN /ANSI5)pre stretch and anti fatigue to make chain life longer6)manufacture and OEM7)packing :1pc/pp bag,white or color inner ...