Specialized Roubaix SL4 fork on an SL3 frame
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  1. #1
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    Specialized Roubaix SL4 fork on an SL3 frame

    Hallo.

    First post but have been reading around here for some time.

    So I have a ~2011 Roubaix SL3 Pro frame that has a damaged fork. It's a bit hard to find a replacement OE fork but found an ~2015 Roubaix SL4.

    Bike was recovered by local PD but the fork's been ground inside to what seemed to make a fat tire fit.

    Both forks are tapered 1 3/8 lower, 1 1/8 upper the difference is that the SL3 has an aluminum sleeve for the lower to ride on and the SL4 does not (just full carbon, countoured to fit the lower bearing directly on it).

    My question is, with the correct headset, will this work? I'm also not sure if the SL4 needs a crown race.

    I called Specialized but was told that it's a strict tolerance between the frame and the fork so no guarantee that it will work.

    Looking for some outside the box builders/riders out there!

    Thanks!


    I'll post photo in a few.




    ride safe

  2. #2
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    Quote Originally Posted by rowfour View Post
    the fork's been ground inside to what seemed to make a fat tire fit.
    Based on this comment (unless I am totally misunderstanding what was done) I would say that frame fit of the fork is the least of your worries. Consider seriously how much material was ground off and whether that has structurally weakened the fork.

  3. #3
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    Quote Originally Posted by Kerry Irons View Post
    Based on this comment (unless I am totally misunderstanding what was done) I would say that frame fit of the fork is the least of your worries. Consider seriously how much material was ground off and whether that has structurally weakened the fork.
    I think he found a 2015 SL4 to replace a 2011 SL3 that some moron stole and ground to fit big tires.

    OP, measurements are measurements. The original being alloy and it's proposed replacement being carbon should have nothing to do with compatibility.

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