SRAM Red Front Braze-on Derailleur Yaw C2Top of the line front derailleur with innovative Yaw design and judicious use of lightweight materials. Product Details: Best combination of aluminum and steel for a strong and durable cage Compatible with Yaw 11 speed shifters and chainrings Integrated chain spotter (adds 12 grams) protects frame without adding extra clunk, adjusts independently of the derailleur itself Optimized for shifting with X Glide Road chainrings and ErgoDynamic DoubleTap