The new shape of the external components enables the rear derailleur to move according to a different angle and the new internal design keeps the chain nearer the cassette to ensure better power transmission, greater and more secure traction The two-piece system, while maintaining resistance and rigidity, makes it possible to reduce the weight by 53% compared to steel and 22% compared to titanium, and prolongs the life of the component Upper and lower body in monolithic technopolymer with carbon powder maximizes weight reduction yet is still resistant to impacts Carbon fiber front plate offers extreme stiffness and reduced weight Ultra-Shift technology Maximum shifting rigidity, fast actuation, precision, friction reduction Optimized for use with the new H11 drivetrain system Speed 11sp Ultra-Shift technology Carbon fiber front plate offers extreme stiffness and reduced weight Optimized for use with the new H11 drivetrain system two-piece system