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giofox
@hippy
So, maybe I could adjust it to work?
"I've been using the 46/30T GRX crankset with my Di2 Ultegra 6800 derailleurs.
Briefly, it works, but I had to adjust the H-limit screw to its most extreme outboard position. There was less than 1mm to spare. I have a band-clamp on a straight-gage steel seat tube, so I have the luxury of positioning the derailleur wherever I want it. It was cutting it quite close, so what I recommend is that you first check to make sure that you have about 4mm of H-limit wiggle-room before you try this. (If not, the GRX front derailleur should solve your problem)."
https://forum.ridinggravel.com/post/anyone-running-grx-4630-with-a-105-front-der-10199934