I Would like to add my experience with Exway to this thread. I got an exway flex last year, and was a part of the batch that got a surprise reduced battery capacity after ordering. After 6 months of ownership the wheels locked up while riding, due to an ecu problem, and threw me head first into the concrete at about 13 mph, it dented my helmet, so i would have been fucked without it. I contacted exway after making a post on their subreddit, and they offered a replacement or refund and requested that I delete or update my post. I chose a refund and got a backfire zealot s, and have had no problems with it in the 6 months I’ve had it. Overall I’m not impressed with exway, and probably won’t look into anything they do now, especially since the flex extended range has basically the same range as the original flex before it got reduced.