Push your ride to the limit with the EK 525 QX-Ring Chain in a precise 124L length. Built for sport bikes and mid-displacement machines, this chain is engineered to transform power into propulsion with minimal drag and maximum durability. It's also an exceptional choice for the high torque demands of modern E-MOTO and electric dirt bikes, ensuring reliable power transfer when you twist the throttle.

Why the EK 525 QX-Ring Chain Stands Out

• 525 Pitch: The "525" refers to the chain's pitch, which is 5/8 inch (15.875 mm) between pin centers, making it a standard size for many modern motorcycles. This pitch delivers precise engagement with compatible sprockets, giving you clean, confident acceleration and smoother gear changes. It strikes an excellent balance between strength and weight, making it a versatile choice for mid-range motorcycles.
• QX-Ring Sealing Technology: This isn't just an O-ring. EK's advanced Quadra X-Ring (QX-Ring) seals create multiple contact points, significantly reducing friction by up to 40% compared to a traditional O-ring chain. This innovative cross-sectional shape retains lubrication longer inside each link and forms a more effective barrier against dirt, dust, and moisture. The result? Extended chain life—up to 1.5 to 2 times longer than standard O-ring chains—and less frequent maintenance.
• 124-Link Length: This specific 124L length is a common and versatile choice, offering the right balance of reach and rigidity for a wide range of 525-class motorcycles. While some bikes may use this length directly, it also provides ample material for custom sizing, allowing you to cut it down for your specific gearing and wheelbase requirements, whether for a sport bike or an E-moto.
• Durable Construction: Crafted from premium steel and featuring protective coatings, this EK chain is built to resist corrosion and maintain peak performance even under aggressive riding conditions, including wet weather and exposure to road salts. All EK sealed chains undergo an industry-leading machining process to ensure optimal sealing and reduce mud/dirt buildup.
• Consistent Power Transfer: Engineered for high-output rides, this chain minimizes power loss due to drag. Whether you’re carving canyons, pushing limits on track days, or navigating city streets with a responsive E-moto, you’ll experience crisp throttle response and efficient power delivery across the RPM band.

Ideal for Riders Who Demand More from Their Drivetrain

If you're a performance-focused rider, a daily commuter battling variable weather, or an enthusiast of high-torque E-MOTO machines, this EK 525 QX-Ring Chain is designed to help you extract every watt of torque with unwavering reliability. Its superior sealing technology not only extends its service life but also reduces the frequency of adjustments and cleaning, making it a practical choice without compromising performance.

Use Cases and Practical Advantages

• Track-Ready Confidence: Experience responsive power delivery and reduced chain stretch during high-RPM sessions, giving you an edge on the circuit.
• Street-Level Durability: The advanced coatings and QX-ring seals resist corrosion from road salts, rain, and grime, ensuring consistent performance for daily commutes and spirited street riding.
• Maintenance-Friendly Performance: Enjoy less frequent adjustments and easier cleaning due to the QX-Ring's ability to keep internal lubrication in and contaminants out. This translates to more riding and less wrenching.
• Versatile Compatibility: Excellent for a wide range of 525-class motorcycles, from sport bikes to tourers, and critically, well-suited for the demanding, instant torque characteristics of E-MOTO applications.

Fitment, Installation, and Care Tips

For optimal results and to maximize the lifespan of your drivetrain, always pair the EK 525 QX-Ring Chain with compatible sprockets, ideally replacing components as a matched set to ensure even wear. After installation, break in the new chain-and-sprocket combination with moderate riding, avoiding aggressive throttle application until the chain plates have properly seated. Regular maintenance is key: use a motorcycle-grade chain lubricant, applying it after the first ride and periodically based on your riding conditions, especially if riding in wet or dusty environments. Regularly check chain tension and sprocket wear, and measure for elongation to ensure safe, precise shifts and prolong the life of your entire drivetrain.

What You Get

The EK 525 QX-Ring Chain comes as a complete 124-link chain, ready to be cut to your specific motorcycle's requirements, designed to deliver high-performance power transfer, enhanced durability, and reduced maintenance for your ride.

Product Specifications

• Chain Type: 525 QX-Ring Sealed Chain
• Length: 124 Links (124L)
• Pitch: 5/8 inch (15.875 mm)
• Sealing Type: Quadra X-Ring (QX-Ring)
• Friction Reduction (vs. O-ring): Up to 40%
• Wear Life Extension (vs. O-ring): 1.5 to 2 times longer
• Recommended Displacement: Ideal for sport bikes, mid-displacement machines, and E-MOTO applications (refer to your motorcycle's manual for specific chain requirements).
• Construction: Premium steel with protective coatings
• Master Link: (Typically includes a rivet-type master link, though screw-type may be available depending on series)
• Manufacturer: EK Chains