Description

The 520ERV7 is a high-performance racing chain designed for all types of motorcycle racing, both on and off-road. With a well-engineered design and DID’s patented X-Ring seal technology, the ERV7 delivers durability and reduced friction.

Used by Factory Teams Worldwide

The ERV7 is the chain of choice for various professional teams, including:

• Superbike Racing: Fresh N Lean Progressive Yamaha Racing, Warhorse Ducati
• Rally & Motocross: Honda HRC Rally Team, Team Honda HRC (SX/MX)
• Off-Road Racing: SLR Honda (SCORE International, WORCS, NGPC)

Specifications

• Available in 120-link length
• Used in MotoGP, Superbike, and road racing
• Upgraded in 2020
• Improved from the 520ERV3, featuring:
  • 3% higher tensile strength
  • 13% longer chain life
  • Reduced friction due to X-Ring material advancements
• Rated for up to 1000cc
• Tensile Strength: 8,800 lbs
• Weight (100L): 3.41 lbs
• Seal: X-Ring
• Chain Life Index: 3500
• Pin Length: 0.752″
• Pin Diameter: 0.217″
• Inner Plate Thickness: 2
• Outer Plate Thickness: 2