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About D.I.D. 520 ERV7 Series Exclusive Racing Chain

D.I.D. 520 ERV7 Series Exclusive Racing Chain

  • High-performance, lightweight, low-friction chains designed exclusively for racing
  • Pins for ER chains are put through a special patented heat-treatment process that produces a 1. 5 times harder than conventional carbon heat treating
  • Provides the highest wear resistance, tensile strength and impact resistance available
  • ER chain used by top motocross/ supercross OEM works teams
  • Distinctive gold-plated finish
  • ERV designed for endurance road racing with special low-friction X-rings
  • Originally comes with clip connecting link.
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