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  • edit : I have a praxis bb30-shimano adaptor BB that I was planning to sell - I'm assuming that's no use?

    it comes with 24mm ID bearings. 3DF is 30mm, right?

    Inverse shim time

  • I'm betraying my lack of knowledge on the subject, but what is an inverse shim? Sounding pretty complicated. 3DF is definitely 30mm but can you expand on what I need to do a bit more?

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