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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.
@Dammit
http://www.ultrabikes.com/ultrabikes-webshop/wattage-power-meters/rotor-powermeter-3d/quarq-rotor-3d-powermeter-standaard.html
£1,240.