C-Bear Delrin Derailleur Pulleys - Full Ceramic Bearings | 12-speed | for Campagnolo

C-Bear Delrin full ceramic pulleys for Campagnolo 12-speed rear derailleurs. The pulleys are equipped with C-Bear full ceramic bearings. This significantly increases the performance of your drivetrain. Derailleur pulleys are the fastest turning bearings on your bike. A modification to ceramic bearings is therefore the most effective upgrade. C-Bear Ceramic Bearings is a Belgian bearing specialist for ceramic ball bearings with the best smooth-running properties, durability and precision fit. All bearings work without additional spacers and washers. Features of the C-Bear derailleur pulley with full ceramic bearing for Campagnolo 12-speed rear derailleurs compatible with Campagnolo Super Record , Record, Chorus 12-speed rear derailleurs consists of 2 wheels, an upper and a lower one Material: Delrin