I bought fan bike from here and the speed sensor broke on me within a month. So titan decided to send me the new bike and I had to send the first one back. Second bike came in, I spend hours to put it together and I notice that it was missing the sensor parts. So titan decided to give me full refund. Of course I had to pack the bike on my own, so I can send it back to them. packaging cost about $20 of tape. Bike was send out 12/09/2021 and today is 01/16/2022 I still haven't receive my money back. I have been trying to reach their customer service. They told me wait 7-10 business days. And they are telling me they didn't receive the bike yet. I send the bike though the FedEx ground (titan gave me the code)