• spacers, or squeeze to 130.

    50mm chainline though, means a longer BB axle, and more Q factor

    No I'm saying the Pompino does not have to have a 50 mm chain line. They make a 120 mm space version with a 42 mm chainline. Knowing that we can say that the chain line is not required to be 50 mm due to tyre / chainstay clearance issues so you can run a 42 mm chainline on a 135 spaced Pompino. This all goes up in the air if for some reason the 135 spaced frame has more tyre clearance but that would be strange that it does.

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