Hi guys.
Question about rear derailleurs
I have an LTWOO GR9 11s rear derailleur. I want to change to a 12s system. I can buy a front LTWOO GRT 12s shifter on its own. Will that work with the rear derailleur I have? I’m thinking the shift ratio is controlled by the shifter and the derailleur just needs to have right length for cassette. So my gut says I just need the shifter.
Would help if someone could confirm.
Thanks.
