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I can confirm that Ultegra 6703 shifter works very well with RD R8000 GS. :)


Shimano and SRAM cassettes of the same speeds (up to 11 speed) are all basically compatible with each other. The overall cassette width and individual sprocket widths and spacings are standardized for each number of speeds. (This does not mean you can use any 10 size speed cassette in a drivetrain of course, as the derailleur has to be able to handle the ...

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