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  1. #1
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    Trek 4300 disc brake conversion

    Hi everyone, new here to the forums and am looking for a little guidance. My bike is a 2001-2002 Trek 4300 and I'm looking to add disc brakes. I know my fork has disc mounts, but does the rear of my frame have mounts too? If it does, would a disc adapter for IS mount frames work, or is there some other adapter I can use? Or am I S.O.L and can't run a rear disk with this frame?

    Thanks in advance for the help.

    Nick
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  2. #2
    ٩๏̯͡๏)۶ Luke52's Avatar
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    Those holes in the picture are not caliper mounts.

    As for how you'd go about adding a mount, I don't know. Chances are you may not be able to.

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    Yikes, I really hope there's a way to mount a rear caliper. It doesn't make sense to me to have disc mounts on the fork but not the frame. Thanks for the reply, though.

    Would something like this work? http://www.jensonusa.com/store/produ...+6+Rotors.aspx

  4. #4
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    All suspension forks have disc mounts. On the older 4300's they did not have a rear disc mount. The newer 4300's come with disc mounts and cantilever mounts. Adding a mount could be problematic. Better to buy a different frame and move your parts over.
    You go where you look

  5. #5
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    Brake Therapy and AtoZ Components make adapters for frames without rear disc caliper mounts. Don't know if either will work with your frame. You'll have to do some research.

  6. #6
    ed
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    Nick, you're in luck.

    A2Z makes an adaptor that mounts a 51mm I.S. to a non-disc frame.

    The DM-UNI


    http://www.a2zcomponents.com/Adapter/Others/DM-UNI.jpg

  7. #7
    ed
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    thanks alot chelboed! ill look into it for sure. any idea how expensive they are and do you have any experience using one?

  9. #9
    ed
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    PM Harliej

    He's got one...I think it was in the 'hood of $25 or so. Works great though.

  10. #10
    Gravity hunter dminor's Avatar
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    You have inspired me, Ed. I looked over the Brake Therapy adapter again and I think I'm going to make my own for the Trek HT. I found an outfit that sells 1/2" 6061 radius and tie rods, 7 - 16", in " increments and 5/16" aluminum Heim ends for reasonable. I'll just need to fab the hub-to-Hayes-adapter piece out of some billet and bolt it all together with stainless hardware. New winter project.

  11. #11
    ed
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    Ahhhhh yeah!

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    Senior Member 4evrplan's Avatar
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    Quote Originally Posted by dminor View Post
    You have inspired me, Ed. I looked over the Brake Therapy adapter again and I think I'm going to make my own for the Trek HT. I found an outfit that sells 1/2" 6061 radius and tie rods, 7 - 16", in " increments and 5/16" aluminum Heim ends for reasonable. I'll just need to fab the hub-to-Hayes-adapter piece out of some billet and bolt it all together with stainless hardware. New winter project.
    I'm looking forward to seeing that.
    Quote Originally Posted by never View Post
    I think being on the back of a DH tandem would keep me awake.

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    Are Trek's good bikes?

  14. #14
    Senior Member bidaci's Avatar
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    dejock

    Your dropout will accept a Trek adapter to disc brake. I think the part# was 210648.
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    Bill

    - Serotta Columbus III - Aegis Trident SS TT - Trek 8000zx -

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    I heard that carbon Treks asplode in sunlite

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    Gravity hunter dminor's Avatar
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    There is a new sticky, thanks to Ed, that covers this and many other conversions:

    Retrofitting disc brakes to a non-disc frame...

    It will become you one-stop source for the subject as it gets fleshed out.

  17. #17
    ed
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    Quote Originally Posted by bidaci View Post
    dejock

    Your dropout will accept a Trek adapter to disc brake. I think the part# was 210648.
    I forgot about these. Good call. (I think they were going for somewhere around $40 on ebay a yr or two ago)

    Totally forgot about that little jibber.

  18. #18
    ed
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    Senior Member bidaci's Avatar
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    Quote Originally Posted by dminor View Post
    There is a new sticky, thanks to Ed, that covers this and many other conversions:

    Retrofitting disc brakes to a non-disc frame...

    It will become you one-stop source for the subject as it gets fleshed out.
    Damn, didn't see that. You already had that one covered!
    Bill

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  20. #20
    Gravity hunter dminor's Avatar
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    It's all good. Ed just created the thread yesterday, I added to it and stuck it last night (I lucked onto that Trek adapter when I was creating my post). Kudos again to Ed for taking the initiative.

  21. #21
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    Quote Originally Posted by frdfandc View Post
    I heard that carbon Treks asplode in sunlite
    Yeah, that's the CF Treks made between '05 and '08. During that time, they were using sub-par fibers...

  22. #22
    use your best eye kenhill3's Avatar
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    Yes, thanks to Ed, Doug, too!
    "I tell you, We are here on earth to fart around, and don't let anybody tell you any different." - Kurt Vonnegut jr.

  23. #23
    Senior Member Milice's Avatar
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    iI think you local trek dealer has that part for about 15.00
    If it looks like the $3000 bikes but costs less than a decent helmet, it probably isn't a wise investment.


    http://keith-crossreference.blogspot.com/

  24. #24
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    Thanks for that link, chelboed. Just ordered one. Way better than buying a new frame (for now)

  25. #25
    ed
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    I feel...helpful.
    I don't like it.

    You are all jerks and disc brakes are for wannabe's and V-Brakes live forever!

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