8.1" for the KTM Duke 200. KTM's error codes typically consist of alphanumeric characters and are specific to certain systems or components of the motorcycle.
If you are experiencing an issue with your KTM Duke 200 and have received an error code "JG_1.8.1," it is possible that this code is not a recognized error code or may be specific to a particular software or diagnostic tool. It is recommended to consult an authorized KTM dealership or a qualified mechanic who specializes in KTM motorcycles. They will have access to the latest diagnostic tools and information to identify and resolve any issues with your bike.