The KLZ magdyno was only fitted on the later ETS/G. You can find them sometimes on ebay or ebay Keinanzeigen. Maybe he
https://trophy-sport.de/ can help you. But as far as i know the KLZ will not fit on the battery ignition crankshaft. The cone is different and also the engine cases..
https://www.powerdynamo.biz/deu/systems ... _nicht.htm powedynamo has made magdyno systems for the battery type but the company is closed. Vape has different systems for sale, i think this
https://www.vape.eu/de/mz-ets250g could be right for your engine. They have also replacement for the KLZ type, but you have to check what is the right system for your engine.
I would always prefer the Vape, I had the KLZ fitted on my ETS/G and it ´didn´t work very well. Maybe because of the age, i don´t know.