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  1. #1
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    Shimano Interchangability and Shifter Question

    I have a Trek Madone with a 105 Group.....you can buy Ultegra or even Dura Ace parts on Ebay (used) for ridiculously cheap compared to buying a Dura Ace bike or a new DA group. So can change these pieces out here and there....example can I put Dura Ace brakes on this bike without any hassle? How about the shifters.....the 105 hoods seem to be huge compared to bikes I have had in the past but might be my imagination...can I change the shifters without changing derailleurs and cables etc.

    Thanks in Advance.

  2. #2
    Have bike, will travel Barrettscv's Avatar
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    Usually yes, but you have to be careful of a few exceptions, due to brake cable pull values. What 105 group do you have? 5600 or 5700? What items are you considering buying?
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  3. #3
    don't misunderestimate me BoSoxYacht's Avatar
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    Quote Originally Posted by Barrettscv View Post
    Usually yes, but you have to be careful of a few exceptions, due to brake cable pull values. What 105 group do you have? 5600 or 5700? What items are you considering buying?
    +1. Also the brake difference isn't as big as we are told(from my personal experience).

  4. #4
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    Quote Originally Posted by Barrettscv View Post
    Usually yes, but you have to be careful of a few exceptions, due to brake cable pull values. What 105 group do you have? 5600 or 5700? What items are you considering buying?
    I think it's 5600 as I don't have hidden cables. First thing I want to change in the near future is the calipers and pads.....it has Tektro calipers and they take a lot of effort to slow the bike down...might just be pads but figured why not change it all.

  5. #5
    Have bike, will travel Barrettscv's Avatar
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    Yes, you have the 5600 if they have the shift cable running externally. You should decide what brifters you will use before investing in new brakes. You don't need to change them at the same time, but you should plan on a matching cable pull design between the two units.
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  6. #6
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    Quote Originally Posted by Barrettscv View Post
    Yes, you have the 5600 if they have the shift cable running externally. You should decide what brifters you will use before investing in new brakes. You don't need to change them at the same time, but you should plan on a matching cable pull design between the two units.
    I had a Dura Ace bike a few years ago.....is it my imagination or are the Dura Ace brifters smaller and sleeker? The 105s look like Ox horns on the bar

  7. #7
    L-I-V-I-N dtrain's Avatar
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    That has more to do with the era/age of the shifters. 5600 are just like the 6600 Ultegra and very similar to 7800 Dura Ace. You may have had 7700 9-speed Dura Ace before, which would be smaller (but so were 105 and Ultegra of those years).

    I'd put Kool Stop pads on and clean your rims. When did you last change your cables? Piecemail upgrades (like 6600 calipers) really aren't that cheap as they buy you so little over working parts...but complete groups are via the UK sites when the time comes.
    "The older you do get, the more rules they're gonna try to get you to follow. You just gotta keep livin', man, L-I-V-I-N." - Wooderson

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  8. #8
    I eat carbide. Psimet2001's Avatar
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    If you can find 7800 DA shifters for a good price they would be a great addition to your bike and would work with everything you have.

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