• All D.I.D ER chains are designed exclusively for racing.
• 520ERT2 is used by the top factory Supercross and Motocross Teams to win races.
• 520MX chain has higher tensile strength for maximum performance and is ideal for muddy and sandy conditions
• D.I.D’s exclusive SDH pin treatment is featured on our 520ERT2, 520 MX, 520DZ 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. SDH treated pins have extreme impact strength while maintaining outstanding shock absorption. This treatment creates a chain with superior wear resistance against invasion of hard foreign materials