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Road Shifters, Mountain Rear Derailleur?

I'm looking to build a hardtail mountain bike with drop bars for commuting, touring and some occasional light off-road adventures.

Are 10-speed Shimano brifters like the Ultegra ST-6600 compatible with the 10-speed Dyna-Sys XT derailleurs?

Thanks.

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marked as duplicate by Gary.Ray Jul 24 '12 at 3:46

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+1 for teaching me a new word: brifters = brake / shift levers –  Andy Dec 5 '11 at 13:35
    

1 Answer 1

up vote 3 down vote accepted

In a word, no. Different cable pull ratio on both systems. You can check out this question if you want a slightly more verbose answer.

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Back to the drawing board... –  jpmartineau Dec 6 '11 at 0:18

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