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Trek 4300 disc brake conversion

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Trek 4300 disc brake conversion

Old 11-04-09, 09:39 AM
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dejock
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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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Old 11-04-09, 02:11 PM
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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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Old 11-04-09, 02:21 PM
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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
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Old 11-04-09, 02:31 PM
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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.
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Old 11-04-09, 02:48 PM
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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.
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Old 11-04-09, 02:49 PM
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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
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Old 11-04-09, 02:50 PM
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Old 11-04-09, 05:43 PM
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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?
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Old 11-04-09, 06:03 PM
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PM Harliej

He's got one...I think it was in the 'hood of $25 or so. Works great though.
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Old 11-04-09, 06:18 PM
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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.
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Old 11-04-09, 09:01 PM
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Ahhhhh yeah!
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Old 11-05-09, 09:18 AM
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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.
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Old 11-05-09, 09:38 AM
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Are Trek's good bikes?
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Old 11-05-09, 10:15 AM
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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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Old 11-05-09, 10:16 AM
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I heard that carbon Treks asplode in sunlite
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Old 11-05-09, 10:25 AM
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There is a new sticky, thanks to Ed, that covers this and many other conversions:

http://www.bikeforums.net/showthread.php?t=600470

It will become you one-stop source for the subject as it gets fleshed out.
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Old 11-05-09, 10:39 AM
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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.
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Old 11-05-09, 10:42 AM
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Here it is $35 BIN:

http://cgi.ebay.com/Trek-Klein-Gary-...item3ca70c2d24
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Old 11-05-09, 10:47 AM
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Originally Posted by dminor View Post
There is a new sticky, thanks to Ed, that covers this and many other conversions:

http://www.bikeforums.net/showthread.php?t=600470

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!
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Old 11-05-09, 10:52 AM
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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.
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Old 11-05-09, 02:58 PM
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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...
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Old 11-05-09, 03:17 PM
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Yes, thanks to Ed, Doug, too!
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Old 11-06-09, 07:06 AM
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iI think you local trek dealer has that part for about 15.00
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Old 11-06-09, 12:54 PM
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Thanks for that link, chelboed. Just ordered one. Way better than buying a new frame (for now)
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Old 11-06-09, 12:57 PM
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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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