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  1. #1
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    Is a Dura Ace BR-7900 brake compatible with 105 ST-5700 shifters?

    I have ST-5700 shifters on my bike and recently purchased a set of BR-7900 Dura Ace brakes. According to the Shimano website, they should work just fine. The entry for the shifters on their website states:

    "Available in silver or black the new 105 levers are compatible with Ultegra 6700 and Dura-Ace 7900 brake arches"

    I also found a compatibility chart floating around (below):

    yU3Di.jpg

    So, it would appear that this combination should work. My question is: Has anyone done this/does anyone have direct experience with this combination?

    Many thanks!
    Last edited by SpeedyP8; 07-18-14 at 12:49 PM. Reason: replacing the word "brifter" in the title...a silly word

  2. #2
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    Brakes and levers can me mixed freely with the caveat that some levers or brifters may be made to be compatible with V-brakers which require different cable pull. Those levers, common for upright bars, are considered special for drop bar levers and should be clearly so marked.

    Otherwise, as Shimano says, you're good to go.
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  3. #3
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    Yes, they are compatible. Shimano has slightly increased the brake cable pull of their current brifters and also slightly increased the cable pull requirements of their road brake calipers for the most current groups. The 5700 and 7900 groups both include these changes and are compatible.

  4. #4
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    Thank you very much for the responses, I appreciate it and am happy to know that this combination will work well!

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