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Missed that the 812 was Di2
Pretty sure it isn't, again the website is pissed but as far as I can tell 800 has been updated to 810 (2×11, 34T max sprocket) and they've added the mechanical 812 (1×11, 42T max sprocket). The corresponding Di2 units are 815 (2×11, 34T max sprocket) and 817 (1×11, 42T max sprocket)
gbj_tester
Can somebody please explain to me why the total capacity on the Shimano GRX RD-RX812 (long) only 31t?
That must be a mistype, surely, as the Ultegra RX RD-RX800 (medium) is rated to 39t total capacity.
Or am I missing something crucial?
Edit*
Missed that the 812 was Di2. The RX810 has 40t total capacity. Still weaksauce..