Campagnolo Record 12 Speed Rear Derailleur, One Size, Black

The Mechanical Record 12 Speed rear derailleur: precision lightness and versatility for use with the disc or rim brake groupsets. Designed to improve performance and function in every aspect the new Record 12 Speed mechanical rear derailleur has an innovative shape that envelopes the sprockets better thanks to 3D Embrace technology creating a double effect: allowing the chain to maintain optimum traction at all times thus increasing the speed power and precision of shifting; and ensuring that the derailleur is always kept an optimal distance away from the sprockets. The new cage has also been optimised to work with sprockets from 11 to 34 teeth allowing a single version to be maintained for all available sprocket sets. The upper part of the new Record 12 Speed mechanical rear derailleur gearbox is made of carbon fibre-reinforced techno-polymer contributing to its robustness and lightness while the stop adjustment screws at the back of the rear derailleur make adjustments very simple.