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SRAM road and mountain 10 speed and road 11 speed rear derailleurs share the same actuation ratio--the amount of derailleur movement per mm of cable pulled by the shifter. SRAM labels this system "Exact Actuation" and it is used on both 10s mountain and 10 & 11 speed road shifters and derailleurs. Also to note is that since you'll be using an ...

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