Shindengen fh020aa Mosfet regulator/rectifier has probably been discussed on other topics, so I simply say it’s an excellent product. I found a company located in The Netherlands and they sell previously used units for 50€ each. At the moment they have dozens for sale, from relatively new bikes (2015-2020). I got mine from 2020 Triumph Street Triple and it’s like new. Great service, good communication and fast delivery.