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  • Please talk to me about seatpost sleeves.
    General view is get a proper service agent to do it, yes?
    And there's only one bit at the top of the seat tube isn't there? So why are sleeves sold in pairs?

  • I had to get mine replaced last year. I looked into doing it myself and quickly realised that it was a lot easier (and cheaper) to get a Brompton specialist to do it.

  • It’s easy, don’t believe the propaganda. The one thing you’ll need a specialist for is the reamer, and you can buy pre-reamed sleeves.

    They’re sold in pairs because they’re cheap to manufacture, and one version (post 2014) has a (tab) that engages on a hole in the frame; whereas the other (pre 2014) does not. An observant eye will note that the latter have marks betraying how the tabs are ground off at the factory, so they don’t even bother having two molds, they just belt sand half of the sleeves.

    (Remembered the word)

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