Moto-RaceSpares

This 120 link 520 ERT2 gold motocross and supercross chain has been designed exclusively for motorcycle racing. The 520 ERT2 chains are used by the top factory supercross and motocross teams.

This chain is lighter than the 520MX motorcycle chain which helps with power transfer.

The secret is DID's SDH high tech pin treatment, which gives an extremely hard chromium carbide layer on the pins surface, which gives extreme strength but maintains excellent shock absorbing properties.