EK Chain 525 SRX2

The EK 525 SRX2 Series Chains incorporate advanced QX-rings that significantly outperform traditional O-ring chains. Laboratory tests have shown that QX-rings reduce friction by 40%, resulting in up to 50% longer lifespan compared to standard O-ring chains. Weight-saving holes are drilled into every other chain link to minimize rotating mass without compromising strength, delivering more horsepower to the rear wheel and improving throttle response.


  • Suitable for street, touring, or dirt motorcycles
  • QX-ring technology for reduced friction and longer lifespan
  • Weight-reducing holes for enhanced performance
  • Compatible displacement: 1000cc Street / 750cc Dirt
  • Weight per 100 links: 4.1 lbs
  • Tensile strength: 9000 lbs
  • Includes a patented screw-type master link for easy installation without special tools, providing a rivet-like fit

WARNING: This product contains chemicals, including lead and titanium dioxide, known to the State of California to cause cancer. For more information, visit