The sram red yaw bicycle front derailleur 2012 is designed to rotate in line with the chain to improve shifting speed and enhance precision whilst the slim spring design eliminates frame interference made from a strong and durable blend of aluminium and steel it also has an integrated chain spotter which protects your frame and adjusts independently of the derailleur itself lm features sram red yaw bicycle front derailleur 2012 designed to rotate in line with the chain to impro