Just machine down a seatpost. Reaming the frame could knacker it and the seatpost would be cheaper to replace than the frame. Alternatively, try and find a seatpost with a quill fitting.
@handtightenonly started
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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Just machine down a seatpost. Reaming the frame could knacker it and the seatpost would be cheaper to replace than the frame. Alternatively, try and find a seatpost with a quill fitting.