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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.
iamalex
https://www.stevehoggbikefitting.com/bikefit/2011/09/all-about-smps/
Scroll about a third of the way down to "Addendum: Instructions for changing seats"