SRAM Rival eTap AXS Front Derailleur - 2x12-Speed Braze-on Black D1SRAM Rival eTap AXS Front Derailleur 2x12 Speed Braze on Black D1. The SRAM Rival eTap AXS Front Derailleur is optimized for X Range chainrings and uses Yaw technology. Its AXS enabled for easy personalization. Wireless electronic eTap shift logic for intuitive shifting easy setup and reliability AXS enabled for easy personalization Crisp and accurate front shifts SRAM Yaw trimless cage technology optimized for use with 46 33 or 48 35 X Range