Originally Posted by SoSmellyAir

If you have an 11-speed short cage RD, this one: Ceramicspeed OSPW Aero Shimano 9100/9150 and 8000/8050 Coated – Bike Closet

I do, but on a non-aero bike with endurance geometry. At $150, maybe I will buy and install one just to be contrarian.