• Hmm, does it not matter that its rotating smoothly? Or will it quietly file away at my headtube causing a sudden and catastrophic carbon fiber failure?

    I've got some 0.4mm thick stainless steel shims in that size, i.e. 1.375" internal diameter, if you want something a bit thinner than the 1mm thick cassette spacer.

    Any of these hanging around?

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