Is the rear derailleur shift speed faster than 11-speed RED eTap™? February 06, 2019 15:49 Updated Yes. Related articles Can I adjust the rear derailleur shift speed? Can RED and Force eTap AXS™ be fitted to a bike that is currently compatible with 8, 9, 10 or 11-speed groupsets? Will 11-speed SRAM RED eTap™ levers communicate with RED or Force eTap AXS™ electronic derailleurs? Do RED or Force eTap AXS™ have smartphone connectivity? Related: Do I need a USB dongle for potential firmware updates? Can I digitally assign different functions to the buttons (e.g. move the derailleur outboard with a left shifter click)?