SRAM RED® eTap Front Derailleur SRAM Yaw™ technology changed front shifting forever, eliminating the need for trim. The SRAM RED® eTap® front derailleur makes a good thing better by executing front shifts confidently and quickly over our proprietary wireless communication protocol. The system optimizes Yaw™ adjustments as needed throughout the shift range with no need for rider input. Wireless connection via AIREA™ network for fast and clean installation Braze-on / clamp adaptor Designed to work with SRAM X-GlideR™ 11-speed chainrings