
This part being universal, it may require adaptations
The EK 420SRO O-Ring 420 chain is a robust transmission designed for urban riders, motocross enthusiasts, and roadsters. Developed by EK CHAIN, it incorporates the expertise of the SRO series: perforated links to reduce weight, heat-treated steel alloys, and O-Ring seals to help preserve internal lubrication. Ideal for small-displacement and lightweight machines, it combines durability and compactness without commercial gimmicks.
Designed to replace the original chain on small motorcycles (enduro, motocross, minibike) and for everyday use, this 420SRO offers a balance between lightness and strength. The O-Ring seals minimize oil loss and facilitate maintenance, while the steel finish gives it a discreet and sturdy look. Compatible with models such as the HONDA CRF 110 F (JE02), the YAMAHA YZ 85 LW BIG WHEELS (CB10), and the GAS GAS MC 65, it is a reliable option for those seeking a standard chain that is easy to install and maintain.