SavageDiver31

OK, so I bought a Trek 5200 (OCLV carbon series) from a guy for $400 (YR unknown I believe it is around a 2000). frame is in great condition and after riding it a year I have decided to put all new parts on it because the Shimano 600's on it now are just not up to par. Having trouble shifting and a lot of grinding, had them tuned twice, stayed about 2 weeks of riding to and from work and then slowly started going back to the way it was.

So, I bought a Shimano Ultegra, 6700 set on Ebay ( again I am a new bee ) I get the box home and remove the old 600 brake set to see if it fits before I take it to the shop to have him put everything on. My new 6700 bolt on the Front Brakes is not long enough to reach through the fork. ( I tried both sets on front and back.) the set with the longer bolt works in the rear, but not in the front. Any one got any suggestions on how to save the $820 I just spent on the group set?

Homebrew01

You probably have a recessed nut & bolt. The bolt goes 3/4 of the way through, and a long barrel nut goes into the fork and they meet inside. Gives a little sleeker look than the nut and bolt sticking out the back. You may need to get the fork drilled to handle it. Or get brakes with longer bolts and sell yours.

jimc101

Were not talking about an old bike here, so drilling, especially as the frame/fork is carbon fiber is a really bad idea; any road bike from the mid 90's on has the same standards as a 2013 bike, with the exception of electrical fitting, and direct mount brakes.

For the 6700 brakes is the set is new as in retail boxed? (taking it as it is) If so, you should have at several bolts included for fitting them to different forks, if longer ones are needed, take the part number from the tech docs, and order them from a good LBS https://techdocs.shimano.com/media/te...9830753782.pdf

If you are having lots of issues, would be looking at getting the whole bike setup at a good LBS, as they can get the whole setup correct, saving you $820 groupset.

SavageDiver31

Thank you much. It is late here in japan i will defently check this out in the morning and let you know if this resolved my issue.

onespeedbiker

The wider carbon forks require a longer recessed nut. They come in various sizes, you just need to find one the correct length. https://www.amazon.com/s/ref=nb_sb_no...sed+brake+nuts

SavageDiver31

Thank you all very much!!!!!! There is a language barrier I have with the old Japanese man down the street, who has a TREK bike shop. Well its mainly a service shop and he sells a few bikes out of the bottom floor of his house, but I thought what the heck he might have a spare, I took the old one out and went down to his shop!! Problem solved!!!! I have now successfully attached both calipers to my Frame!!!! Thanks again every one!

Rest_assured

I often have this problem. What I do:
-put the front brake on the back
-remove the front wheel
-hold the rear brake in place on the fork, pushing the bolt through the hole in the fork. Obviously it won't pass all the way through
-use pliers to hold the nut in place from under the fork
-stick your Allen key through the back hole of the fork, and tighten the nut

hope that makes sense