DID is the OEM supplier of many Japanese and European brands. The main road racing and off-road sports teams are based on the technology of DID. DID CVM X: Succeeding high performance chain demonstrated ZVM2 was in the development of CVM X has paid special attention to the different loads that occur in everyday life. The tensile strength exists in this case not only in the laboratory statically determined breaking load of a chain, but the resistance to forces occurring in practice. Therefore, above all the strength has been centered in service with the CVM X. -a higher tensile strength and -niedrigeres weight than the ZVM2 -Very high wear resistance and -up to 50% reduction of frictional losses thanks to the patented X technology- Ring silver outer plates, silver inner plates (S & amp S = silver and silver)