• Measure the headtube? I can and will, though the cups are installed so might not too be able to get a caliper on any rebate if there is one. Pretty sure it's 34mm nominally

    @coventry_eagle I know, which is kind of why I bought it, though I can't imagine that extends to cack handed spannering. I guess if the cups are out of tolerance that's a manufacturing fault!?

  • I'd measure the external bit of the cup where the bearing sits to see how round that is.

    The version I have looks a bit newer. The cups have an additional seal which does add some resistance compared to the 40 model.


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    • PXL_20250102_072643058.jpg
  • Seems pretty much round, though not sure my calipers are accurate enough to tell for sure.

    Now having doubts about whether it's actually a 110 and not a 40, but the shape seems about right.

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