This is a DID520ERV7 X-ring gold racing chain and rivet link with 120 links. The chain comes supplied with a hollow-pin rivet link: a suitable riveting tool will be required to fit the chain. 

The DID 520ERV7 chain is suitable for motorcycles with displacement of up to 1000cc. 

Upgraded from the 520ERV3, the 520ERV7 boasts a 3% higher tensile strength, a 13% longer chain life, and less friction due to X-Ring material improvements.

DID is the biggest name in the world of motorcycle chains. Manufactured in Japan to the highest standards, DID chains are fitted as standard original equipment by most of the leading motorcycle manufacturers.