C-Bear OCM Derailleur Pulleys - Ceramic Bearings | 12-speed | for Shimano Dura Ace R9250

For the Shimano Dura Ace R9250 12-speed rear derailleur, the manufacturer C-Bear Ceramic Bearings created the OCM shift wheels with Kerimklagererkugeln. Here, the bearing balls run in the ceramic grooves. In addition, they are larger than the original shifting wheels, from where the name is derived: OCM = Original Cage Max. Thanks to the enlargement they increase the perfomance of your drive significantly. Gear wheels are the fastest rotating 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 accuracy of fit. All bearings work without additional spacers and washers. Features of the C-Bear gear wheel with ceramic bearing for Dura Ace R9250 OCM = Original Cage Max - more teeth than the original. Teeth: 12 (idler pulley), 13 (tensioner pulley) Ceramic bearings from the specialist Gear ratios: 12-speed Application: Road, Triathlon & Time Trial Scope of delivery 1 x tension pulley C-BEAR OCM Shimano Dura-Ace 1 x guide pulley C-BEAR OCM Shimano Dura-Ace