SRAM RED AXS E1 Groupset (NEW!)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. RED is packed with features, like accurate and reliable power measurement, new shift points, and more brake adjustability, while still shaving grams off every component to bring you the lightest electronic groupset ever. Crank arm