O-Ring X-Ring Motorcycle Chain Our motorcycle chain meet or exceed DIN, ANSI,ISO,BS,JS standard, ... and stand up to the toughest w Our motorcycle chain meet or exceed DIN, ANSI,ISO,BS,JS standard, ... with you in the near futureGeneral Standard for Roller Chain:ROLLERSolid RollerMaterial 1035,1045 or 1050Through harden with surface ... core 39-45HRCShot peening per the spec O-Ring X-Ring Motorcycle Chain