ลูกรอก NOVA RIDE SHIMANO OSPW ULTEGRA / DURA-ACE 12S

This product is composed of a carbon cage and two 7075 aluminum pulleys (14 & 17 teeth) with full ceramic sealed bearings. In this version, Nova Carbon Ceramic Derailleur Shimano Road 12S cage is only compatible with : - Shimano Ultegra R8100-8150 Series - Shimano Dura-Ace R9200-9250 Series Please note : - Not compatible with Shimano 11-speed version. Designed by our French Engineers Nova Carbon Ceramic rear derailleur improves the fluidity of your transmission, enhance efficiency to satisfy the most demanding. Made in very high-end materials: an ultra-light carbon fiber and full ceramic sealed bearings. Two Oversized aluminum wheels, which coupled with full ceramic sealed bearings decrease the chain winding angle with minimal friction and optimize your gear change. Features Weight : 68 g Please note We recommend a maximum 34T cassette for optimum gear change. 12S Version is compatible with Shimano electric (Di2) 12-speed Ultegra / Dura-Ace derailleurs. Despite visual similarities, the Shimano 105 and the Shimano Ultegra / Dura-Ace 11S versions are not compatible with the Shimano Ultegra / Dura-Ace 12S versions and vice versa.