EK Chain 520Z3D120KG 3D Z-Series 520 Motorcycle Drive Chain 120 Links Black/Gold

The EK Chain 520Z3D 520 x 120 Link Drive Chain in Black/Gold is a premium motorcycle drive chain engineered for riders who demand both performance and aesthetics. Developed as an evolution of the legendary EK ZZZ chain, the 3D Series retains the same impressive tensile strength while delivering a significantly lighter package — making it one of the most advanced non-O-ring style drive chains available for street sportbikes.

Revolutionary 3D Plate Design:

• 3D curved outer plates are precision-forged into a striking three-dimensional shape that enhances stiffness and maximizes power delivery to the rear wheel
• Dimpled outer plates provide additional structural strength without adding weight
• Lightening holes in both the inner plates and pin ends reduce overall chain mass while also helping to shed mud and dissipate heat more effectively
• Edge-cut inner plates reduce friction and allow for smoother, more efficient sprocket engagement
• Chromium carbide-coated pins increase surface hardness and significantly reduce chain wear over time
• QX2 X-Ring seals deliver 30% better wear resistance compared to standard QX-rings, putting approximately 1% more power to the rear tire
• 9,400 lb. tensile strength in 520 pitch — matching the strength of heavier chains in a lighter profile
• Precision forge manufacturing process produces a stiffer chain for better acceleration and more efficient power transfer

The 520Z3D is rated for street use up to 1000cc-class motorcycles and comes as a 120-link chain with a rivet-style master link included. The Black/Gold colorway (suffix KG) adds a bold visual accent to any drivetrain. Weight per 100 links for the 520Z is 3.64 lbs, making this one of the lightest high-performance chains in its class.