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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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@1922
19t EAI cog..
fitted an used for 1 ride
.. sell it for £15 they cost £25
is 1/2 x 1/8 size
pix;
http://www.flickr.com/photos/23208485@N05/
LDN only (NO posting)