SRAM Red Front Braze-on Derailleur Yaw C2SRAM Red Front Braze on Derailleur Yaw C2. Top of the line front derailleur with innovative Yaw design and judicious use of lightweight materials. Yaw angle is designed specifically for 22 speed drive train Integrated chain spotter (adds 12 grams) protects frame without adding extra clunk adjusts independently of the derailleur itself Best combination of aluminum and steel for a strong and durable cage Slim spring design eliminates frame interference