Alex's Cycle in Japan should have it though, and they ship to the UK.
Big £££ for customs duty?
Also, do you really need a 172.5?
Yeah according to scheritt plus I havent used any crank length apart from whatever is there on the brompton.
You might be better off buying a 44-30 from Dolan and changing the outer ring then. The FSA ones are basically OEM only, and I don't think you'll convert a 7803 or 6603.
@Lolo started
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Big £££ for customs duty?
Yeah according to scheritt plus I havent used any crank length apart from whatever is there on the brompton.