... 420H,428, 428H,520, 520H1 We have own Assembly Workshop of Chain, Manufacturing Workshop, Test equipments, Advanced Heat-treatment Equipments etc. ... and Gray.The above represents some of the chain sizes offered. The other types of chains can be considered upon request. ... years experience in maufacture motorcycle. we can provide various kinds of motorcycle chain like 415, 415H, 420, 420H,428, 428H,520, ...