DID chain set consisting of a DID chain, a sprocket and a pinion. DID is original equipment manufacturer of many Japanese and European brands. Leading racing teams in the Road and off road sports rely on the technology of DID. DID 428VX: The development of the successor of the proven VM is also based on the long-standing Experiences of DID in the MotoGP and fulfilled by the use of the patented X-rings even highest claims. Compared to its predecessor, the 428VX scores points with significantly higher tensile strength and mileage. - high durability and low friction due to patented X-ring