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Bike Mag
Conflict: Cheerful About (a few) Seat Post Size Choices
Where Andrew will happily justify the existence of the three surviving legacy seat post sizes – 27.2 / 30.9 / 31.6 – and offer an explanation as to why 34.9 has never really taken off (unless we’re talking about shimming a 30.9 post into a 34.9 seat tube, because there’s lots of that going on).
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