DID 428H Heavy Duty Chain
D.I.D chain is used by the factory race teams of the big four and is the #1 chain manufacturer in the world. Solid rollers. Shot-peened parts. High cylindrical and roundness accuracy. Exacting tolerances provide low friction. Pre-stretched. Extended riveted bushing "Anti-Kink" design. Special alloy steel. Average tensile strength of 5,250 lbs.