Old 03-08-10, 10:14 AM
  #6  
M_S
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An X9 derailleur should work, as it is a 1:1 actuation ratio, just like the double tap shifter. You will need a 10 speed cassette, of course. Just as with Shimano (or any system) SRAM derailleurs don't have "speeds", shifters do.
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