AXS™ enabled for easy monitoring and firmware upgrades Single-ring drivetrain simplifies functionality Fully integrated power meter into a direct mount aero chainring Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride Power balance measures left and right legs separately SRAM X-SYNC™ wide-tooth, narrow-tooth chainring technology provides maximum chain control Laser-etched chainring finish is more durable 8-bolt direct mount compatibility only to new RED® and Force eTap AXS™ cranks.