Bought from a great guy in Menlo Park California, he had it converted to fixed gear at Shaws' Lightweight Cycles of Santa Clara, Ca. I believe most of the bike is stock (cranks, pedals, Suntour brake) I switched out the bar levers for a single IRD lever, modified Brooks Saddle, Nitto track bar, and the wheels (Suzue hubs and Velocity DeepV rims).