The EK 520 RV3D is a high-performance drive chain designed for competition motorcycles and demanding racing applications. This black-and-gold chain features 120 links and uses EK’s NX2-ring technology to help maintain sealing performance while supporting smooth, consistent power transfer. Manufacturer part number 520RV3D-120KG and vendor part number 520RV3D-120KG identify this specific EK chain configuration.
Engineered with weight-reducing cutouts, the EK 520 RV3D helps minimize rotating mass without compromising the strength needed for competitive riding. Its dimpled outer plates provide added reinforcement, while chromium carbide pins improve durability in high-load conditions. The combination of lightweight construction, reinforced components, and premium finish makes this chain well suited to performance-focused motorcycle drivetrains.
Fitment is intended for motorcycles that specify a 520-size, 120-link drive chain, including competition and racing models using compatible sprockets. Confirm the motorcycle manufacturer’s chain size, required link count, sprocket compatibility, and installation specifications before purchase. The EK 520 RV3D is for competition use only and is not intended for general street or touring applications.
Features:
- Size: 520 drive chain with 120 links
- Model: 520 RV3D
- Brand: EK
- Manufacturer part number: 520RV3D-120KG
- Vendor part number: 520RV3D-120KG
- Finish: Black and gold
- Technology: NX2-ring design for performance-focused chain sealing
- Construction: Weight-reducing cutouts support lower rotating mass
- Outer plate: Dimpled design adds strength
- Pins: Chromium carbide pins provide enhanced durability
- Application: For competition use only
- Fitment: Motorcycles requiring a compatible 520-size, 120-link drive chain