A S&S style coupler would work and so you a new dropout with a both together design similar to the District. The video didn't show the Fixie INC. (horrid name BTW) frame in detail which is what I wanted to see.
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I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC