Experience wireless shifting precision with the SRAM Rival eTap AXS Rear Derailleur, engineered for 12-speed drivetrains with seamless electronic actuation. The medium cage accommodates cassettes up to 36 teeth, delivering versatile gearing options for varied terrain and riding styles. Its sleek black finish with grey accents complements modern bike aesthetics while maintaining SRAM's reputation for durability. full compatibility with your existing AXS ecosystem, letting you integrate this derailleur into a complete wireless drivetrain without additional purchases. (Battery not included)