SRAM RED AXS Front Derailleur FD-RED-E-E1 Apparel_Women's Tri Suits the central section of the

the central section of the casing features 3 layers of nylon as well as an additional puncture protection belt

extreme durability and tread longevity

Standard Coil Spring Retention

Ultegra Di2 wires utilize Shimano's e-tube technology

SRAM RED AXS Front Derailleur FD-RED-E-E1 Apparel_Women's Tri Suits the central section of theAXS 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 46 33T, 48 35T, 50 37T, 52 39T, 54 41T, and 56 43T chainring combos Speed (FD) 12 Compat Chainring (FD) 46 33T, 48 35T, 50 37T, 54 41T, 56 43T