Here is my first Fixi. I dont know anything about the frame except that it has a "Tiger Cycle" decal and emblem. It also has little hearts on it so it could be related to nishiki. I ended replacing the old suzue freewheel hub (that came with it) with a brand new Suzue flip-flop hub. I pretty much put together the entire back tire with some help by a new friend(local bike shop mechanic, as well as a fixi rider) Chris. I am riding on 52/14 but plan on going to 46/14 or 42/14. I ride my new fixi in Modesto California so if anyone wants to ride hit me up. Also if anyone has any information on what kind of it is feel free to send it my way.