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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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Sumo
Yesterday I found by my flats bins an intact pair of rim brake Mavic cosmic ultimate 50mm carbon wheels, seem fairly modern ushaped profile, were these known to be problematic or anything? Tyres hold air, bearings are good, spokes are fine, hubs are ok #savetherimbrake