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@veLLo
I'm trying to make my bike compliant. I tick all boxes so far except for GI (also, I need to make sure tyres are OK).
Currently running 49X15. I would like to avoid changing / finding a new chain ring, am I allowed to approach the required 84 (82.7 with 49X16) or should I be exactly spot on 84? Just trying to sense how strict it is, will do whatever I'm told in the end...