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  • nope but BB90 has maxed out the shimano axle length .. I think the pre-load bolt engages less in it than BSA.

    Is it axle based rather than BB interface then?

    What is SiSl then?

  • It's the width between the pedals. So it's only made smaller by changes to crank design or axle length. BB makes no difference, unless there's a different axle.

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