Unfortunately, Shimano killed Di2 for 12-speed MTB. Otherwise, that new 10-45 MTB cassette plus a 12-speed Di2 RD and the new GRX Di2 brifters would’ve been perfect for 1x gravel.
Honestly, for all the fuss Shimano made this past spring about their big “gravel listening tour”, I still don’t think they get it.
Last edited by john.b; 10-09-19 at 05:37 PM.