Don't settle for anything less. Used by Ryan Villopoto to win 4 AMA SX titles
- 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.
NOTE: Former ERT & 420NZ2 Connecting Links are not interchangable. Former DZ & DZ2 Connecting Links are not interchangable.