Originally Posted by tntmo
You'd probably be best to just get an entire Chinese 200cc dirt bike and rob everything you need including a wiring harness. Everything I read about them says that the strong point is the engine, and the frame/suspension/wheels are junk.
I am watching for a complete bike to transfer everything over to the RM250 rolling chassis I have.
It is much easier to start with a running bike than to figure out why it won't start when getting just an engine.
Lifan and several others have excellent reviews of their engines.