<!--ProdInc[170089529]/Mall:[rei_US]--> Compatible with any Eagle cassettes and crankarms (not included), allowing Eagle users to experience AXS without needing to buy an entire new groupset AXS is an integration system that connects electronic components and software, making it possible to program and personalize SRAM and RockShox components with Eagle technology The SRAM AXS app allows you to see battery status, change AXS-enabled component behavior, personalize controls, get maintenance reminders and update firmware Overload Clutch design allows the derailleur to sense impact and safeguard against potential damage By quickly disengaging the motor gearbox, the derailleur can move out of harm''s way, then instantly return to its position for a seamless rider experience GX Eagle AXS derailleur is engineered to mirror XX1 and X01 Eagle AXS derailleurs and features the same rugged dependability GX Eagle AXS controller is highly customizable with options to swap paddle shapes, reassign touch points with the AXS app and choose from AXS Discrete or MatchMakerX clamps SRAM AXS battery offers approximately 20 hrs. of ride time or more, weighs just 25 g and is detachable with a single clip?and it only takes an hour to charge Checking battery life is easy: a green light means it''s at or close to full charge, red means it''s at or close to half charge, and flashing red means it''s time to recharge To prolong battery life, the system goes to power save mode when the bike is stationary Removable battery cover keeps your battery safe and protected from impacts; cover is compatible with existing XX1 and X01 Eagle AXS derailleurs (not included)Imported.