D.I.D. 520ERV7120ZB 520 ERV7 X-Ring Racing Chain 120 Links Gold

The D.I.D. 520ERV7 X-Ring Racing Chain is a top-of-the-line high-performance motorcycle drive chain engineered for serious racing applications. Built in Kaga, Ishikawa, Japan, this 120-link gold chain represents D.I.D.'s pinnacle of road racing chain technology, delivering exceptional strength, reduced friction, and extended service life over the previous ERV3 generation.

Upgraded from the 520ERV3, the ERV7 features improved pin, bushing, inner/outer plate materials, and an enhanced patented X-Ring seal, resulting in a 3% higher tensile strength, 13% longer chain life, and reduced friction compared to its predecessor.

Key Features:

• 520 pitch, 120-link gold chain for high-performance street and road racing use
• Patented X-Ring seal technology — the X-Ring twists between side plates rather than compressing, dispersing pressure and minimizing power loss
• Four contact points per link greatly increase sealing performance, keeping dirt out and lubrication in
• Tensile strength: 8,800 lbs — engineered for maximum displacement engines up to 1,000cc
• Weight: 3.41 lbs per 100 links — lightweight construction for performance-focused builds
• Superior wear resistance versus standard O-ring and modified O-ring chains
• Rivet-type master link included for a secure, race-ready connection
• Manufactured in Japan by skilled technicians to OEM-grade standards

D.I.D. is the number one motorcycle chain brand in the world, trusted by factory race teams globally. The 520ERV7 is the ideal choice for riders who demand the highest level of drivetrain performance, durability, and reliability on the track.