If you post the frame or even tubing type, someone might be able to tell you what size seatpost you need. My 531 Raleigh is 27.2mm, my gaspipe (18-30) Raleigh is 25.4mm.
@ffm started
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If you post the frame or even tubing type, someone might be able to tell you what size seatpost you need. My 531 Raleigh is 27.2mm, my gaspipe (18-30) Raleigh is 25.4mm.