Campagnolo Record 12-Speed Rear Derailleur. The Campagnolo Record 12-Speed Rear Derailleur is made to provide premium shifting performance at an affordable price. This derailleur features many of the technologies found in Campy’s Super Record rear derailleur such as 3D-Embrace technology. In addition, the upper pulley wheel sits in a position that increases chain wrap on each sprocket. This improves shift…