It is a Nashbar carbon fiber bike. It is a double and guess it has the standard 46, 36 chainrings it came with. The cassette is 11-32? I am not sure if I would be able to attach a rack. I will say the frame is significantly heavier than my road bike which is also carbon fiber. The tires look to be 32mm.

I am planning on using on dirt, gravel and road. Someday would like to do the Katy Trail. May even ride it on a logging road or two.