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.
- Manufacturer Reference: 420SRO-STL 110 SKJ
- Type: O-Ring transmission chain
- Pitch: 420
- Number of Links: 110
- Color: Steel / Steel
- Weight: 0.78 kg / 100 links
- Relative Lifespan: 1000 (for 100 links)
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.