Could be a very interesing approach to remap MT-05 ECU. I found
https://oldskulltuning.com/delphi-mt...atv-and-bikes/
Offering xdf files for the MT-05 ECU and the Lifan LJ250 is a supported bike. You read out the ECU file, send it to them, pay 30 EUR (approx 25 USD) and receive a remapped file to be loaded to the ECU.
Charles for spare parts of the SSR you can check the british lexmoto for the Lj250-3V (Vendetta) microfiche.