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London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
@Bad_Science
https://www.youtube.com/watch?v=UyoUmXIvYaE&list=PLkRGz7rqwGe2AGakCpoohNoH7SAG0kgah#t=57
&v=UyoUmXIvYaE#t=57