The bottom bracket that you see in the picture has a strange 16 teeth profile (3-1-3-1-...). I had this bike built a few years ago and I don't remember what model the BB is. I wonder what removal tool I can buy to remove and replace this BB.

I will list other components around the BB, which may help to identify the model:

  • track Miche Primato Advanced crankset (JIS)
  • Mash Work frame with BSA BB threading

bottom bracket picture

Edit: After dismounting the BB, I have its manufacturer/model information: VP Components VP-BC73.

  • I'd guess the other side is the same, once you get the crank off with a square-taper crank puller.
    – Criggie
    Jun 12 '18 at 3:50

Looks like a typical 20 tooth (Park Tool BBT-22/32) tool should do the job. I'm not sure why every 5th spline is left out of this cup design, but visually the spacing looks the same.

Park Tool BBT-22

  • 1
    After you eventually get the BB removed, you should add the manufacturer / model information into the question, as that could help others in the future asking about a similar BB.
    – renesis
    Jun 11 '18 at 23:07
  • @dlatikay I was also initially fooled by the lighting in the original photo. They are fused slots, not fused teeth. The extra teeth will fit the wider slot just fine.
    – jpa
    Jun 12 '18 at 7:06
  • upvoted (and deleted embarrassing comment :-))
    – dlatikay
    Jun 12 '18 at 7:10
  • 1
    @renesis Thanks for the answer, I have just orderered a BBT-22 tool. I will update the answer once I get the tool. and I manage to figure out manifacturer/ model of the BB out. Jun 12 '18 at 8:12
  • 1
    The tool was correct. The BB is actually seized to the frame, so I will have to bring it to the LBS, but that's another story... Jun 29 '18 at 20:01

This looks like a 20 spline lockring where pairs of slots at 12, 3, 6 and 9 o'clock are joined together.

  • 2
    This doesn't add anything to renesis's answer. Jun 11 '18 at 23:32
  • @AlessandroCosentino Could be both answers were posted close together and neither saw the other's answer.
    – Criggie
    Jun 12 '18 at 3:49
  • 1
    @Criggie There's 25 minutes between them.
    – Mast
    Jun 12 '18 at 6:27

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