... and anti-fatigue 4.Long life duration The Chain technic treatment is as below:1.Shot peening2 ... Tempering10.Oiling11.GreasingMain products as the following:1.Motorcycle Chains: 25H (04CH), 415, 415H, 420, 420H, 428, 428H, 520, 520H ... , 530, 530H, 05MA, 05MB, 05MC, 06MC2. O-Ring Motorcycle chains: 428SO, ... 0820.9221526.529.71.06 best cheap motorcycle chain 428/420