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London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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@Brainfart_Industries
http://www.binova-flow.de
I am quite happy with this system. Big Q-factor takes a while to get used to but runs very silent and smooth. Not cheap though but im lucky to know a guy working there who gave it to me for testing. It definitely multiplies the occasions this bike is being used.