Campagnolo 2014 EPS Athena Road Bicycle Rear Derailleur

Campagnolo has used the world's best electric motors to ensure effective shifting even under strain and high performance shift after shift. Exclusive multi shifting system lets the rider shift up or down the range through all 11 speeds in one action. 'Back Home' system with manual release for battery exhaustion also prevents damage to the derailleur in the event of impact or drivetrain malfunction. Upper and lower body in carbon technopolymer, front link and rocker in aluminum for maximal lightness and stiffness. Magnetic Hall Sensor ensures the rear derailleur always moves the chain into the ideal position for the given gear selected100% waterproof with conformity to the IP67 international standard225 grams