Schimbator spate bicicleta Shimano DURA-ACE 12 vitezeShimano DURA ACE Di2 RD-R9250 12-speed Rear Derailleur The Shimano Dura Ace RD-R9250 12-speed rear derailleur combines charging port and wireless system in one compact unit to provide a lightning-fast and precise shifting performance that is ready to win. With just one cage length, the rear derailleur shifts on cassettes from 11-28T to 11-34T, further enhancing the versatility of the world 39;s best road bike component group. THE SCIENCE OF SPEED: Shimano Dura Ace Di2 12-speed Rear Derailleur RD-R9250Shimano has been working for years to provide you with an advantage of seconds. The new 12-speed DURA-ACE R9200 is the fastest groupset ever and the pinnacle of SHIMANO technology and innovation. Speed was the key driver for the development of this new generation road groupset. That 39;s why every component has been revised, refined and optimised to make you even faster - whether to leave the peloton behind you or to win the final sprint on the Champs-Elysees. Features - Shimano DURA ACE Di2 RD-R9250 12-speed Shadow Rear DerailleurFULLY CUSTOMISABLE The drive can be adapted to the rider 39;s preferences via the E-TUBE app Among other things, the shift speed can be set, a fully or semi-synchronous shift mode can be selected and the programme buttons on the gear lever can be assigned specific functions WHEN EVERY SECOND COUNTS Our exclusive wireless protocol increases shifting speed without sacrificing any of the shifting precision and reliability SHIMANO is known for Fast, jerk-free shifting for responsive acceleration at any speed Low profile rear derailleur design SHIMANO SHADOW RD Race endurance for less damage in crush Maintains compact and smooth appearanceProduct featuresUse: Road Group: Dura Ace Di2 R9250 Model: RD-R9250 Mount type: Direct Mount Gear rear: 12-speed Compatible chain: CN-M9100 HG 12-speed Max. teeth large sprocket: 34T Min. teeth large sprocket: 28T Max. teeth small sprocket: 11T Min. teeth small sprocket: 11T Max. front difference: 16T Total capacity: 35T Compatible electric wire: EW-SD300 Firmware update by E-tube Project: Yes E-tube port (pcs): 1 E-tube connector (pcs): 0 Di2 Wireless-Chip: Yes

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