The carbon outer plate wraps around the metal body and executes the commands from the Ergopower Ultra-Shift controls with precision. Maximum smoothness for the cage pulleys made of anti-vibration material. Practically perfect from every point of view. The 11-speed rear derailleur has a forged aluminium upper body which works on an enveloping and oversized carbon fibre outer plate. The new form confers torsional rigidity which is 150% greater than the old design and contributes to the construction of a parallelogram with absolute operating precision.
