motorcycle chain: 1.40Mn or 45Mn Material 2.competitive price 3.standard breaking load motorcycle chain specifications:25H,420,428,428H,520,530,O-RING chain availableItem 428/428H Motorcycle chainBrand NameJXModel NO.428/428HMaterial40MnPitch12.70mmColorNatural, blue ,Black, chrome , goldStructureRoller Chain PackingInner: ploybag+color boxSpecial packing according to requirement.Main ...