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  • 3DF and BB86.5 .. Rotor says use 4130 BB .. would I need any spacers?

    This frame.

  • Thought most treks were bb90, which won't work with 30mm axle.

    If it is bb86 then yes the 4130 bb will work. No spacers needed on mine (giant tcx) just a slight tweak to the preload ring.

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