Do I need the SRAM AXS App to ride my Eagle Powertrain equipped bike? You do not need the SRAM AXS App to ride an Eagle Powertrain equipped bike. However, the App features additional functions and allows you to customize the system. Related articles What information and ride stats from my Eagle Powertrain system can I retrieve from the AXS App? What App do I use to configure the Eagle Powertrain system? What type of batteries do the Eagle AXS controller require? How do I pair my AXS components together? Are special chain tools, chain pliers, or chain whips required to work on Eagle AXS™ drivetrains?