XT M8100 (1 x 12) and Sir 9 - is BioCentric 30 the best option?- Mtbr.com
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  1. #1
    mtbr member
    Join Date
    Apr 2014

    XT M8100 (1 x 12) and Sir 9 - is BioCentric 30 the best option?

    I ordered the XT M8100 (1 x 12) groupset and just need a bottom bracket to go with my SIR 9 frameset. M8100 has 24mm spindle.

    Are there better options or best to go with the BioCentric 30?


  2. #2
    mtbr member
    Join Date
    Feb 2019
    BioCentric 30 is sweet if SS is in your plans. If not, just get a standard PF30 BB sized for the shimano crank. You'll save quite a few bucks getting a basic BB over the biocentric. That being said, mine is set up exclusively as an SS, and it is probably the best EBB I've used.

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