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can I swap out the 105 chainset for a 46-30 grx double without changing anything else for easier gravgrav ratio?
You have to lower the front derailleur, and shorten the chain obviously.
You’ll probably also need to change to a GRX front derailleur, because of the 2.5mm offset GRX chainrings. Although some people report that their road front derailleur also worked, by adjusting the limit screws to their limit.
Tijs
@bigshape
currently I'm running road a 105 group with 50-34/11-32.
can I swap out the 105 chainset for a 46-30 grx double without changing anything else for easier gravgrav ratio?