• You could look at this the other way and point the finger at SRAM for designing a crankset that doesn't fit on all frames. If it is only the Omnium's that don't fit on the pre cursa then you need to ask why they have been designed in such a way that needs more tolerance on chain stay.

    Also not sure they are "the most popular track chainset" is there a top ten chart I have missed....

  • To be fair, I had to use a Campa 111mm BB to make the Sugino75 fit after failing with the Omniums – and it's not exactly ISO clearance now either.

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