World leader in power transmission technology, D.I.D Corporation is renowned as the manufacturer of the world's best selling motorcycle chain.
D.I.D chain is chosen by the world's best riders including Valentino Rossi, Chris Vermeulen, Chad Read, James Stewart and Ricky Carmichael.


D.I.D motorcycle chains undergo many quality controls during manufacture. Except faulty materials and workmanship, the following are excluded from our responsibility; normal wear, incorect fitment, poor maintenence, any alteration of a motorcycle,or racing use.



  • D.I.D ER chain is designed exclusively for racing.
  • 520ERT and 520MX are used by the top factory Supercross and Motocross Teams.
  • 520MX chain has a higher tensile strength for maximum performance and is ideal for muddy conditions.
  • D.I.D’s exclusive SDH pin treatment is the secret behind the superior performance of our 520ERT, 520MX, 520ERV2 and all size NZ series chains.
  • SDH 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 creates a chain with superior wear resistance, anti-oxidation properties and performs well against invasion of hard foreign materials.



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