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You could easily get a 29.0 seatpost https://www.ebay.co.uk/itm/133459989643
You could easily get a 29.0 seatpost https://www.ebay.co.uk/itm/133459989643
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coventry_eagle
withered_preacher
Buddy has brought me a bike (mid 2000s Trek 4300). He mentioned the seatpost keeps slipping and so I checked it, confirmed it is 3mm (!) under spec, the slot was completely closed at the top. I opened it up to make the slot parallel again and reamed it out , but this only brings it to 29mm, still far off the 31.6 Trek specifies. Where do we go from here? He doesn’t want to spend much, but I would recommend going to a LBS and have them look at it, either to fit a post to the current dimensions or open it up to spec or? The frame is aluminum.