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I had it setup by the guys from Pinarello, but only the fitting of the chain (a new KMC one I bought when I picked up the bike) and they told me they had indexed the gears too. I thought it looked a bit off with the mech in that position. I'll take it back in the week and see what they say. If the front mech won't allow it, I guess I can swap it for one that can accommodate 48 teeth?
MrMister
@yoav
Is that your current setup? That rear mech already looks far too stretched as it is let alone with a bigger chainring. Did it come like that it did you set it up? The front mech actually looks too high above the large chainring (gap between large chainring and bottom edge of front mech cage should be about 1-2mm).
Anyway, look up the specs of your derailleurs and see what the max tooth capacity is. If the extra teeth you want to put on the front chainring is still
within their capacity then you can just change the big ring and leave everything else as it is, apart from the chain which needs more links.
(Any 4 hole chainring with the right BCD will work)