Efficient Wireless Shifting
The rear derailleur is the heart of the Red AXS groupset. Updated to a lighter, more efficient, and more capable rear derailleur offers riders more reliable shifting than before. Covering cassette ranges from 10-28T up to 10-36T, this wireless derailleur has larger pulleys to decrease chain articulation and increase efficiency, and an Orbit fluid damper keeps everything in place over the rough stuff so you can keep the power down. One derailleur ready for 1x or 2x, on road or off.