DID Black 428 D Series Chain and Sprocket Kit. DID is an OEM of many Japanese and European brands. Leading racing teams in the road and off-road sports rely on the technology of DID. As a successor to the tried and tested 428 standard chain, the 428D has used a new technology for manufacturing the rollers. Up to now, the rolls of sheet metal strips have been wound, resulting in a seam and thus a weak point.Thanks to the new technology, the rolls are made of round material and a sewing area is thus avoided. 1x Black DID 428 D Series Chain. Product Type: Chain and Sprocket Kit. Plate Thickness - Inner: 1.5mm. Plate Thickness - Outer: 1.5mm. Tensile Strength (kN): 19.2kN. Weight per 100 links: 0.83kg. You can send us a message by using the "Questions and answers" section towards the bottom of the page.