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Shimano Launches 12-Speed GRX Di2...and its 2x OnlyThus, if you own a 2x12 mechanical GRX bike you can upgrade to an electronic ... used in the latest generation Shimano Dura-Ace, Ultegra, and 105 Di2 road groups, the new GRX Di2 has wireless ...
The new Ultegra RX derailleur comes in mechanical RD-RX800-GS and Di2 RD-RX805-GS models. Both use the company’s Shadow technology and have the same low-profile appearance as the R8000 and R8050 ...
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