SRAM RED E1 AXS Front Derailleur Not just fast and reliable front shifts, but quiet ones too. The SRAM RED AXS front derailleur features SRAM Yaw technology with optimized cage shape for a quieter drivetrain. It's designed specifically for AXS road groups and offers simple setup, precise shifts, and improved tire clearance. AXS-enabled for easy wireless setup, monitoring, personalization, and reliability Refined cage shape results in faster and more accurate front shifts Easy setup with included tool SRAM Yaw cage technology optimized for use with X Range chainrings Auto trim functionality for rasp-free running Compatible with existing AXS batteries (sold separately) | Sram | Red E1 Axs Front Derailleur Braze-On (W/o Battery)