Jianshe-Yamaha 重庆建设摩托车股份有限公司

So Hanway will be using the JS150 motor in 125cc form similar like the Asiawing 125 Enduro
Attachment 19074

Hello guys.
I want to ask some questions about Jianshe 150-31. In Poland it's available with 125cc engine (it's called Junak RS Pro).
I guess the engine is the same as native 150-31 with different cylinder and cylinder head only.
The problem is that there is no spare parts available in Poland for that particular model.
I'm assuming that most of the parts are the same as in one of Yamaha's engines but I don't know which one fits.
Do you have any idea?