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  1. #1
    RoadBikeReview Member
    Join Date
    Apr 2004

    Question about Tiagra flat bar brake levers (BL-4700)

    I am converting a drop bar road bike to flat bar, so I am looking for inexpensive brake levers that will work with road calipers.

    I was looking at the Tiagra BL-4700 levers. It is a road group so I assumed they work with road calipers.

    However, I am a little hesitant due to the claim that they are compatible with V-Brakes AND road calipers (and road disc brakes). How can it work well with both? They have different pull ratios.

    Do the levers have some sort of pull-ratio adjustment? Or is the pull just somewhere in between the two brake types (and sucks at both)?


  2. #2
    RoadBikeReview Member
    Reputation: JCavilia's Avatar
    Join Date
    Sep 2005
    Not sure, but the product description on Amazon says "adjustable lever reach and transmission ratio." Some other sellers say adjustable "pull ratio," so I guess that's the deal. Shimano could have been a little more informative on their website.
    Have you ever been to Electric Ladyland?

  3. #3
    RoadBikeReview Member
    Join Date
    May 2014
    I have used the BL-4600 with both road and V brakes, the adjustment is easy. I can't imagine the 4700 are any different.

  4. #4
    wim is offline
    RoadBikeReview Member
    Join Date
    Feb 2005
    Shimano calls it "mode switching." Under "General Safety Information" in the tech doc.

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