The front derailleur has never really been near the top of the list of priorities for most component manufacturers Tour de France victories have even been derailed pun intended by faulty front derailleur shifting . Not so for Campagnolo for two decades, Campy's engineers relentlessly worked to perfect the most accurate and precise front derailleur in its fabled history. The Record 11 EPS Front Derailleur achieves this through the use of Campagnolo's new Electronic Power Shift, or EPS. With EPS, Campagnolo has re imagined the capabilities of the front derailleur, and has forever changed its expected function. The electronic revolution is here, and there's no going back. The Record 11 EPS Front Derailleur is a technological marvel. Like Campagnolo's Record 11 EPS Rear Derailleur, it operates on an electronic actuator comprised of a gear motor and an electronic sensor. Where it differs is in the details. The gear motor for the front derailleur's electronic actuator was developed with a Swiss company that manufactures electric motors for space missions to Mars. Really. It operates with a high over torque transmission resulting in a high gear ratio for precise, strong pulls. The electronic sensor utilizes Magnetic Hall Sensor Resolver technology that both physically and digitally isolates the electronic sensor from terrain vibration. This isolation guarantees consistently precise function of the derailleur's positioning and shifting. Differences between the Record and the Super Record versions of the EPS front derailleur are small. Record 11 has alloy chainguide plates instead of carbon, and steel motor mounts to replace Super Record's alloy mounts. The tradeoff is a slight weight gain, but you do shave a few dollars off the price. Campagnolo has spent a great deal of time on the Record 11 EPS front derailleur to guarantee precision by eliminating terrain vibration and maximizing rigidity. The frame derailleur fixing system is comprised of an aluminum polymer ble...