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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.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Chalfie
https://www.cyclepowermeters.com/powertap/powertap-service-centre/powertap-g3-hub-service.html
euservice@powertap.com
https://powertap.zendesk.com/hc/en-us