The DID 520 ERV7 is a premium racing drive chain designed for riders who demand reliable power transfer, high strength, and long-lasting performance. Built with stronger inner side plates and thicker pins, it delivers increased tensile strength to handle hard acceleration, heavy loads, and aggressive riding.
Thanks to DID’s patented X-Ring seal technology, the ERV7 helps keep lubrication where it belongs and reduces friction and wear. That means more consistent drivetrain performance, longer service intervals, and improved durability in the mud, dust, and high-speed conditions typical of both off-road and street-based racing.
Key features:
✅ 3% higher tensile strength from reinforced inner plates and thicker pins
✅ 13% increased wear resistance with improved X-Ring durability
✅ Factory-team proven, top-tier chain for all types of motorcycle racing (on & off road)
Benefits of use:
🔹 Handles race-level loads for dependable power delivery
🔹 Reduced wear for longer chain life and steadier performance
🔹 Trusted, high-performance choice used by factory teams worldwide
Technical specifications:
📌 Chain size: 520
📌 Links: 118
📌 Seal type: X-Ring
📌 Master link connector: Rivet
📌 Tensile strength: 38.5 kN (8660 lb)
📌 Color/finish: Gold
📌 Approx. weight: 1.55 kg / 100 links
Why choose this product?
⭐ Premium DID build quality with proven racing pedigree
⭐ High strength + sealed design for demanding conditions
⭐ A performance-focused upgrade for riders who don’t want to compromise
