You are reading a single comment by @atz and its replies.
Click here to read the full conversation.
-
Stronglight have 44, 46, 48 and 49T outer rings to fit 4-bolt Ultegra/105.
Their smallest inner ring is 34T though, which I think is a limitation of (non-oval) chainrings with 110 BCD. So if you want 32T or smaller you need either an oval chainring or a different crankset (e.g. FSA, GRX).
Here you go;
https://bike.shimano.com/en-EU/product/component/ultegra-r8050-di2/RD-R8050-GS.html
If you want bigger; get smaller chainset (48/31, or 46/30).