Nope. Sorry. I haven't done it yet but I think the best solution is to buy a new set of cranks in 170 or 175 and switch them on to the existing chainring. Or just buy a whole new chainset. I won't be buying 172.5 again!
@walm started
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Nope. Sorry.
I haven't done it yet but I think the best solution is to buy a new set of cranks in 170 or 175 and switch them on to the existing chainring.
Or just buy a whole new chainset.
I won't be buying 172.5 again!