My friend has a P.3 frame which is about 7 years old. It was from the first couple years they started making them. I'm trying to find a new seatpost collar for it, but the old collar's ID measures 36mm and the OD of the seat tube measures 35.2 to 35.3mm, neither of which is a standard size. Could someone help me figure out what size collar I need to buy?
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Thread: seatpost collar size on a P.3?