Im trying to investigate what type of bottom bracket has by Wilier Zero9 road bike. Looks like some pressfit but Im Not sure, inner bearing width has 25mm. I have Shimano Ultegra 2x11 6800.enter image description hereenter image description here

1 Answer 1


A quick Google search suggests it's a BB386Evo. Do you see that number, or maybe just a "386" stamped anywhere on it?

Further confirmation:



That last link makes it sound like it's a custom BB:

"The bottom bracket standard is the Wilier co-designed BB386EVO, designed for 30mm diameter thru-axles and 86mm wide bottom bracket shells"

  • I bearly see, thougt it was 686 written but Looks it is 386 as you suggest
    – Velocoder
    Commented Dec 10, 2018 at 21:20
  • Thanks for the links, great to read such words about my bike
    – Velocoder
    Commented Dec 10, 2018 at 22:12
  • 2
    It appears you need the sort of BB that mates with the BB386EVO frame standard but "adapts" it to 24mm spindles, which is different from just a BB386EVO BB. Commented Dec 10, 2018 at 22:40
  • 1
    I pine for the days of just a couple of common BB standards.
    – mattnz
    Commented Dec 10, 2018 at 23:20

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