1147830010 EK 520 MXR/3D ThreeD motocross chain 520 size 120 links gold

The EK 520 MXR/3D ThreeD motocross chain (520 pitch) with clip master link represents one of the most advanced solutions for off-road racing applications, engineered to deliver maximum lightness, strength, and superior dynamic performance. Developed by EK Japan, it features the proprietary ThreeD Dynamic Design, redefining the balance between weight and durability.

The three-dimensional plate design, achieved through a precision forging process, reduces material in non-critical areas, minimizing stress and improving transmission efficiency. The chamfered inner and outer plates and drilled lightweight pins provide an overall weight reduction of up to 10%, enhancing acceleration and responsiveness.

The CRH (Chromium Carbide Hardening) treatment applied to the pins ensures an extremely wear-resistant outer surface with a tougher inner core, improving impact absorption and reducing wear. This technology enhances resistance to abrasion, deformation, and oxidation, making the chain ideal for extreme conditions such as mud, sand, and harsh off-road environments.

The non-sealed (no O-ring) design ensures direct power transfer without energy loss, while the tensile strength of 38.5 kN (8655 lbs) guarantees high performance under competitive conditions. The gold/gold finish adds a premium racing look, recognized with the Good Design Award.

The EK 520 MXR/3D is the perfect choice for riders seeking a premium ultra-lightweight motocross chain, designed to deliver efficiency, durability, and maximum responsiveness in off-road racing.

Technical features:

• Brand: EK Chain (EK Japan)
• Model: 520 MXR/3D ThreeD
• Pitch: 520
• Use: Off-road / Motocross / Racing
• Quality: Premium
• Technology: ThreeD Dynamic Design
• Chain type: Non-sealed (no O-ring)
• Color: Gold / Gold
• Connection: Clip (master link)
• Links: 120
• Tensile strength: 38.5 kN / 8655 lbs
• Weight: 1.41 kg / 100 links
• Total weight: 1.47 kg
• Relative wear index: 450
• Pin treatment: CRH (Chromium Carbide Hardening)
• Features: Up to 10% weight reduction + high wear and impact resistance