D. I. D. s 520NZ chain is a non O-ring chain with solid bushing and quad-riveted pins. D. I. D. s SDH high-tech pin treatment forms an extremely hard chromium carbide layer on the pins surfwhile maintaining a softer inner core. SDH treated pins have extreme impact strength while adding outstanding shock absorption. The SDH process creates a chain with superior wear resistance, outstanding anti-oxidation properties and performs well in dusty and muddy conditions. Model # 520NZ-112 Features: New anti-kinking design Maximum engine displacement - 250cc Tensile strength - 8050 pounds Projected wear life 4. 1 times longer than a standard chain under similar conditions Master link included.
