EK CHAIN 428SROZ O - Ring 428 Universal ChainRef : EKC03039A / 1149164006

The EK 428SROZ O-Ring 428 chain is designed for riders seeking a reliable and robust transmission for a wide range of machines — from roadsters to enduros, as well as touring and sport bikes. Made with heat-treated steel alloys and perforated links, it reduces weight while maintaining a sturdy construction to withstand miles and varied conditions.

• Type: O-Ring chain — maintains lubrication between links and protects against dirt.
• Pitch: 428
• Number of links: 134
• Weight: 1.03 kg / 100 links
• Color: Steel / Steel
• Relative lifespan index: 1000 (based on 100 links)
• Manufacturer reference: 428SROZ-STL 134 SKJ

The SRO series offers a good compromise between cost and longevity: machined links to lighten the overall weight, heat treatments for strength, and O-Ring seals to limit wear from contamination. Ideal for urban riders as well as trail adventurers, this chain adapts to many uses — however, check the number of links and the need to shorten or adjust the chain when mounting on your sprocket/plate. Regular maintenance and lubrication remain essential to get the best performance from the transmission.