is grx ST-RX810-R rear shifter compatible with xt rear derailleur, Shimano XT M8000 Shadow+ Rear Derailleur - 11 Speed - Medium Cage GS
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1 Answer
No, Shimano 11 mountain and road cable pull are different. If you want bigger than the 42t that GRX rear derailleurs can do, you're going to either be dropping down a road derailleur with one of the hanger extensions, or using an adapter to a mountain derailleur.
answered Sep 17, 2021 at 4:28
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Speaking of the adaptors (Shimano road shifters to MTB rear derailleurs), I've had good luck with couple of them. I'm not a particularly skillful mechanic & I had them setup and shifting well with reasonable effort.– Paul HSep 17, 2021 at 17:08
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You could also use a friction shifter. Maybe not ideal for 11 speed but it works fine on my 9x.– OlaSep 17, 2021 at 18:51