The Eagle AXS derailleur is more than just a mechanical derailleur with a battery and a motor bolted on, it is the heart of the whole AXS system. 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. XX1 Eagle AXS utilizes the proven backbone of SRAM 1x systems with an XC spec that is more than ready for the trails too. With the lightest weight materials and a 500-percent gear range you are ready for whatever the mountain throws your way. This is the pinnacle of performance and ready to go with the next generation of super bikes. Instantaneous shifts from a single touch even while under World Cup-winning chain loads and tested to IP69K water and dust proofing standard Eagle AXS has you covered.