Every part of RED has been refined to create an effortless ride. Light brake feel and comfortable ergonomics, smooth front shifting, fully wireless connectivity, and expanded gearing choices fit every rider and their needs. Not just fast and reliable front shifts, but silent running across the whole cassette. The RED AXS front derailleur uses Yaw technology with electronic trim to ensure the fastest possible shift while eliminating chain rub in all combinations, with the easiest setup around, thanks to a brilliant new tool.SRAM Red AXS E1 Groupset ReviewFeaturesAXS enabled for easy wireless setup, monitoring, personalization, and reliabilityRefined cage shape results in faster and more accurate front shiftsEasy setup with included tool SRAM Yaw cage technology optimized for use with X Range chainringsAuto trim functionality for rasp-free runningCompatible with 46/33T, 48/35T, 50/37T, 52/39T, 54/41T, and 56/43T chainring combos