SRAM FD RED AXS E1 BZ-ON 12s BATTERY NOT INCLUDED BLACKNot just fast and reliable front shifts, but silent running across the whole cassette The RED AXS front derailleur uses Yaw technology with electronic trim to ensure the fastest possible shift while eliminating chain rub in all combinations Compatible with 46 33T, 48 35T, 50 37T, 52 39T, 54 41T, and 56 43T chainring combos AXS enabled for easy wireless setup, monitoring, personalization, and reliability SRAM Yaw cage technology optimized for use with