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Discussion Starter · #1 ·
I have an older Giant AC that has a 27.2 mm seatpost, and a seatpost shim for 27.2mm to 30.8 mm conversion. If I can find a seatpost that is 30.8 mm, can I just use that? The shim has been a pain in the a55 at times, so if I can get away without it, all the better.
 
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