The wider gearing options for Force eTap AXS front derailleurs and 43/30 cranksets fit even wider tires and wider bottom bracket configurations than the standard RED and Force eTap AXS front derailleurs and cranksets. The crankset fits a nominal 68mm bottom bracket shell OR a nominal 73mm bottom bracket shell. See our frame fit specification here, and our crankset/bottom bracket user guide here.
For assistance selecting the correct DUB road bottom bracket, see here.