CeramicSpeed Oversized Pulley Wheel System Campagnolo EPS 12-Speed

##CeramicSpeed Oversized Pulley Wheel System Campagnolo 12-Speed CermaicSpeed?s Oversized Pulley Wheel System for Campagnolo 12-Speed is designed to work with Super Record EPS rear derailleurs. The aluminium pulley wheels are far more durable than standard pulleys and should last much longer; whilst the hand-built CeramicSpeed bearings are extremely low friction for a more efficient drivetrain. The larger pulley wheels mean that the links within the chain have to rotate less around the wheels thus reducing friction even more and saving precious watts of energy.