428 motorcycle chain 1. pitch: 12.700mm 2. d1 max: 8.51mm 3. d2 max: 4.45mm 428 motorcycle chain(1)Product:A series and B series short pitch roller chains,having duty roller chains,roller chains with srtaight sides,Motorcycle chain.(2)durable in use.(3)Color:natural,black,copper.(4)pre-stretched and anti-fatigue. 428 motorcycle chain/cycle motorized