I bet the Chinese motor/controller lasts me a few years & many miles from the feel of them, smooth & powerfull for a 500 W 36 V bike. I'm sure they wouldnt give 2 years on the warranty if Prodeco didnt believe in them. Anyways after the warranty expires I may Hot Rod it with a more powerfull motor/controller/battery setup.
I like the welds on the Frame..& other components..You get what you Pay for & even though I've only put 5 mils on my bike so far I think I have a lot for the money here.