
This part being universal, it may require adaptations
Manufacturer Reference: 420SRO-STL 138 SKJ
The EK 420SRO O-Ring chain is a reliable solution for those seeking a robust and economical transmission for urban, roadster, or light off-road machines. Designed around O-Ring seals, it retains lubricant between the links to limit wear and facilitate maintenance. Its construction utilizes thermally treated steel alloys and precision machining, hallmarks of EK quality.
Ideal for small displacement engines and uses combining city and off-road, this 420SRO adapts to configurations requiring 138 links. Common fitment examples include: HONDA CRF 110 F, YAMAHA YZ 85 LW Big Wheels, GAS GAS MC 65. Be sure to check the sprocket, chainring, and spacing before installation and adhere to lubrication intervals to maximize longevity.