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Can somebody please explain to me why the total capacity on the Shimano GRX RD-RX812 (long) only 31t?
The website specs seem to be all over the place, but in at least one place it seems to indicate that the 812 is for 1×11 with an 11-42 cassette (31T total) and the 800 is for a 2×11 with an 11-34 cassette (23T) and a 16T gap at the front, total 39T
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..