Ceramicspeed shimano road 12-speed derailleur pulleys

Product Description CeramicSpeed pulleys for Shimano Road 12-speed rear derailleurs such as R9250 and R8150 The CeramicSpeed pulleys for Shimano Road 12-speed are compatible with the Dura-Ace R9250, Ultegra R8150 and 105 R7150 Di2 rear derailleurs. They each have 11 teeth and are made of aluminium. Smooth-running ceramic bearings increase the performance of your drivetrain. For hazard warnings, safety and application information, please see CeramicSpeed Oil for Derailleur Pulleys. Technical Information:Application:Road, Triathlon & Time TrialCompatibility:Shimano Road 12-speedTeeth:11Gearing:12-speedMaterial:aluminiumBearings:CeramicCompatibility:Shimano Dura-Ace Di2 R9250Shimano Ultegra Di2 R8150Shimano 105 Di2 R7150Features:high-performance bearings with special ceramic balls made of grade 3 silicon nitride (best achievable degree for ceramic bearings)CeramicSpeed bearing balls: 15% harder, 100% smoother and 99% more resilient than commercially available ceramic ballsball bearing retainer made of reinforced polyamide, race made of hardened steel with polished channelenergy savings thanks to greatly reduced friction, higher top speed thanks to improved power transferhandmade in DenmarkManufacturer Number:111926 Contents:1 x CeramicSpeed Shimano Road 12-speed lower derailleur pulley1 x CeramicSpeed Shimano Road 12-speed upper derailleur pulley1 x CeramicSpeed oil, 15 ml dropper bottle1 x spacer kit Manufacturer: CeramicSpeed Sport A/S Noergaardsvej 3 7500 Holstebro Denmark info@ceramicspeed.com