A guy at work has one of these Lifan bikes. Lifan got the plans from Honda, so it is an almost exact copy of a 1980s 250cc Honda dirt bike with a newer suspension, and they make a sportbike fairing version. He has had his for about four years with no problems, except some extra work getting a title for it.
For the Niagara Falls area, Steve Leigh at Hardlydangerous Motorsports spends some of his time building motocross race bikes, but most of his time selling and maintaining low cost Chinese bikes, after he goes over them to improve the wiring and any other defects. His phone number in Canada is 905-228-3167. Most of the Chinese bikes are shipped to the Pacific coast, then trucked from there.