The SRAM RED 22 Front Derailleur changes everything including offering every gear combination with no chain rub or rasp. Instead of simply moving back & forth the derailleur cage actually rotates to maintain a consistent angular relationship with the chain. We call it Yaw™ Technology & it eliminates the need for shifter trim. As a result shifts feel more direct more precise & combined with the new SRAM RED crankset & chainrings delivers an unmatched performance advantage in front shifting. Yaw™ cage rotates in line with chain improving the shifting speed & precision while eliminating the need for shifter trim.