SRAM Rival AXS Front Derailleur - 2x12-Speed, Braze-on, (Battery Not Included), Black, E1Experience elevated front shifting. The Rival AXS front derailleur uses SRAM Yaw cage movement and auto trim for silent, rasp free running, and a narrower cage shape that integrates with our X Range chainring design for fast, clean shifts. Our setup tool means you'll get the ideal position without any fuss, too. Compatible with 46 33t, 48 35t, or 50 37t chainring combinations Refined cage shape results in faster and more accurate front shifts SRAM Yaw