1. Material for motorcycle chain: 40Mn/A3; 2. Meet ISO,ANSI,DIN,BS,JIS standards; ... service 4. Prompt delivery time We produce various of motorcycle chain of good quality with competitive prices, which have won positive ... . 1. The detailed specifications Plate material: 40Mn Pin material:30CrTi Roller material: 10#2. Color: original, blue, yellow, red;3. OEM ...