DID 520 ERT2 Gold / Gold 118 Link Enduro / Off-road / MX Drive Chain (Please Note; The chain is 120 links and may need to be cut down to the correct length for your bike) DID is proud to present its 520 ERT3 chain: The ERT3 chain is used by the best supercross and motocross factory teams D.I.D's exclusive SDH pin treatment is the secret behind the excellent performance and is ideal for use in muddy conditions. The revolutionary SDH treatment forms an extremely hard chromium carbide layer on the pin's surface, while maintaining a soft inner core SDH-treated pins have very high impact strength while maintaining outstanding shock absorption. This treatment creates a chain with superior anti-oxidation properties and wear resistance, for top performance and protection .
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