Experience race-proven performance with the DID 520 ERT3 chain. Designed specifically for motocross, this lightweight, low-friction drive chain delivers fast response and efficient power transfer—exactly what you want when every split-second counts. As DID’s #1 selling motocross chain and a favorite among many factory race teams, the 520 ERT3 is built for riders who demand reliable performance under hard racing conditions.
The non-sealed construction helps reduce friction and rotating mass, making it an excellent choice for competitive motocross and especially popular in the 250 class where quick acceleration and feel are critical. With a strong strength-to-weight ratio, it’s a smart upgrade or replacement when you want race-focused performance rather than maximum long-interval longevity.
Key features:
✅ Motocross-specific ERT design for high-performance racing use
✅ Lightweight, low-friction non-sealed construction for fast power delivery
✅ Factory-team proven—DID’s top-selling motocross chain
Benefits of use:
🔹 Sharper throttle response thanks to reduced friction and rotating weight
🔹 Confidence under load with high tensile strength for aggressive riding
🔹 Easy fitment and service with a clip-type master link connector
Technical specifications:
📌 Brand: DID
📌 Chain size/type: 520 / 520 ERT3
📌 Seal type: Non-sealed
📌 Number of links: 114
📌 Master link type: Clip
📌 Tensile strength: 36.9 kN (8300 lb)
📌 Color/finish: Gold
📌 Max off-road displacement: up to 450 cc
📌 Weight: 1.55 kg per 100 links
Why choose this product?
⭐ Race-focused DID engineering with an excellent strength-to-weight ratio
⭐ Widely used in competition and trusted across multiple racing disciplines
⭐ Proven, popular choice when you want a dedicated motocross chain built to perform
