XX1 Eagle AXS Rear Derailleur 12-speed

More than a mechanical derailleur with a battery and a motor bolted on, the Eagle AXS derailleur is the brain of the whole AXS system. Trim it at set-up for zero rub, making the near-silent operation of Eagle even more stealthall while improving drivetrain longevity. It features a shorter cage for 10mm more ground clearance, with more chain wrap on the cassette to sit slightly further forward, and further inboard from mechanical Eagle. Instantaneous shifts from a single touch even while under World Cup-winning chain loads recorded in the heat of racing and affirmed in the test lab.