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 - Drive Chain ZVM-X As a successor of the proven high performance chain ZVM2 was in the development of the ZVM-X paid special attention to the manifold loads that occur in everyday life. The tensile strength indicates only the statically determined breaking load of a chain in the laboratory, but not the resistance to the forces occurring in practice. For this reason, ZVM-X's main focus was on strength during use. - an increased tensile strength and -Lower weight compared to ZVM2 -very high wear resistance and - Up to 50% reduced friction losses due to the patented X-Ring technology