Shimano Ultegra RX Di2 rear derailleur review

Shimano Ultegra RX Di2 rear derailleur review

Shimano didn’t reinvent the wheel — or derailleur — in developing the Ultegra RX rear derailleur. Instead, the company combined its proven R8000 series rear derailleur with the Shadow Plus clutch system it has used on its mountain bike groups since 2012. A complete guide to rear derailleurs How to adjust a rear derailleur video That's not to say it's exactly the same as the company's clutch-equipped Di2 mountain bike rear derailleurs, which have been used for several seasons in lieu of purpose-built derailleurs for gravel and cyclocross use. According to Shimano’s Hiroshi Matsumoto, who oversaw the development of the Ultegra RX rear derailleur, clutch tension on the new derailleur is lower than the company’s Shadow Plus mountain bike derailleurs. “We found that the experiences were very different on gravel and on the mountain bike. On the mountain bike, the derailleur deals with large impacts, where on gravel, there is ...

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