This bike was bought from amazon as the following link, it is 54cm frame and I had it for only 2 months, everything works perfectly and I am selling it because I have to move out of CA.
http://www.amazon.com/gp/product/B00BD45U8E?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00

Ask for $140

I leave in San bruno by the bart and caltrain station, you need to pick it up.

Please text me at 2679948619 or use email: bxb20032008@gmail.com