1153517004 EK 520 R/3D ThreeD motorcycle chain 520 pitch 116 links Chrome

The EK 520 R/3D ThreeD NX-Ring motorcycle chain (520 pitch) with rivet link represents the pinnacle of EK technology for track and racing applications, engineered to deliver extreme lightness, high strength, and superior performance. Used by the Moto2 Stylobike Yamaha Racing team, it is a benchmark solution for sport bikes up to 750 cc.

Thanks to the ThreeD Dynamic Design technology, the chain structure is optimized through cold-forged and chamfered plates, reducing weight without compromising strength. The drilled lightweight pins further reduce rotating mass, improving acceleration, responsiveness, and drivetrain precision.

The NX-Ring sealing system ensures optimized internal lubrication and extended lifespan, maintaining low friction and consistent performance even under extreme track conditions. This results in improved power transmission efficiency and reduced wear over time.

The rivet-type connecting link (MLJ) ensures maximum safety for racing applications, while the chrome finish provides a distinctive and technical look. With a tensile strength of 35 kN and a lightweight design (1.44 kg per 100 links), this is one of the lightest chains in the ThreeD range.

The EK 520 R/3D is the ideal choice for riders looking for a premium racing motorcycle chain for track use, designed to deliver maximum performance, lightness, and durability in competitive environments.

Technical features:

• Brand: EK Chain (EK Japan)
• Model: 520 R/3D ThreeD NX-Ring
• Pitch: 520
• Use: Track / Racing / Sport riding
• Quality: Premium
• Technology: ThreeD Dynamic Design
• Chain type: NX-Ring (advanced sealing)
• Color: Chrome
• Connection: Rivet link (MLJ)
• Links: 116
• Tensile strength: 35 kN
• Weight: 1.44 kg / 100 links
• Relative wear index: 3400 (high durability)
• Application: Up to 750 cc racing bikes