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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?