SRAM Force AXS eTap Front Derailleur - 2x12-Speed Braze-On (Battery Not Included) Iridescent Gray D2. Lightning-fast and reliable shifts every time. The SRAM Force AXS front derailleur uses everything they know about shifting to provide precision when you’re switching rings. It’s optimized for the 13-tooth gap between X-Range rings and Yaw technology ensures trim is a thing of the past.eTap shift logic for intuitive shiftingAXS enabled for easy wireless setup monitoring personalization and reliabilityCrisp and accurate front shiftsSRAM Yaw trimless cage technology optimized for use with X-Range chainringsDesigned for standard chainline eTap AXS cranks.