The SRAM Rival eTap AXS derailleur brings their cutting-edge AXS Wireless technology to an incredible new price point! Using the same features as the Red and Force derailleurs in a cheaper package, Rival eTap AXS rewrites what to expect from a mid-tier drivetrain!Slick shifting wireless rear derailleurFor use with SRAM eTap AXS Controllers and 12-speed Rival drivetrains (Sold separately)Clutch provides impeccable chain retentionBattery not included - sold separatelyControlled by SRAM's new eTap AXS technology, the derailleur offers crisp, instantaneous shifting and a super-clean cable free design, taking mere seconds to install and sync with the eTap AXS shifters and controller using the AXS app. The system is completely water and dust proof to IP67K, so the elements are shrugged off with ease. The battery (sold separately) is shared with other AXS and eTap components, so can be swapped if needed and lasts between 20-30 hours of riding between charges.