DID Chain 520 x 120 ERT3 Racing Gold Chain

The D.I.D chain advantage is not just limited to light weight and superior strength. D.I.D Chain's exclusive SDH pin treatment is another secret behind their winning performance. 

The SDH pin treatment creates an extremely hard chromium carbide layer on the pin surface which increases chain life. And at the same time the pin's inner core remains soft to absorb the tremendous shock loads of triple jumps without breaking.

• D.I.D ER chain is designed exclusively for racing.
• 520ERT3 is used by the top factory Supercross and Motocross Teams.
• D.I.D's exclusive SDH pin treatment is the secret behind the superior performance of our 520ERT3, 520 MX and all NZ Series chains. This hi-tech pin treatment forms an extremely hard chromium carbide layer on the pins surface while maintaining a soft inner core.
• SDH treated pins have extreme impact strength while maintaining outstanding shock absorption. This treatment creates a chain with anti-oxidation properties and superior wear resistance against invasion of hard foreign materials.