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16 Comments

  1. internetfood on

    Do you transport your bike on the back of a car?

    Do you have a repair stand? If so, where do you clamp it?

  2. fish_snagger on

    Looks like it was damaged by a Bike Repair stand clamp possibly?
    Edit: sorry, just seen your comment below. Is your bike rack a top tube holding type?

  3. I am going to add that an issue can appear well after an impact/force or you just notice it.

    You may not have hit it that day but that looks like an impact. The flexing while being used causes things to grow and become noticeable.

    I wouldn’t discount a bar spin as well due to the offset. If it was hard enough, it could have been the weak point and then started showing later.

    Either way trek has a good warranty and replacement policy and that is also an easy spot for a carbon repair if it comes to that.

  4. try doing the coin test knock on it with a coin if there a difference in noise the one with the crack has a dull sound

  5. You keep calling the crack ‘it’, but I see two cracks, unless one crack goes more than halfway round the top tube? That takes enough energy to feel it if it happened while riding…?

  6. Jolly_Law7076 on

    Take it back to Trek. Top warranty policies for defective materials.

    Be friendly, it’ll smooth the replacement journey…

  7. Youngnapkin89 on

    these bikes are strong but not made for impacts, very likely it was defected front factory and you hit a bump and it cracked, carbon isnt perfect and some stuff slips thrue even on super high end bikes like yours. since you were smart and bought a trek they will most likley warranty it for you

  8. almostalwaysafraid on

    So, no one seems to be pointing out the fact that the crack looks like it goes all the way around the underside of the top tube. This damage would be most consistent with the rider accidentally landing on to top tube, typically during a dismount that does not go as planned.

    There wouldn’t be any impact damage as your body is softer than the carbon but your body weight is enough to do this with just a little inertia.

    Trek may choose to help you out but you likely broke this bike unless someone else rides it.

  9. As a Trek dealer I have to say that’s a weird one. I have had cracked frames come in that I would have said it was “ misuse” but Trek covered it as a manufacture’s defect, and vise versa. Good luck, always helps to be civil. Let us know what happens

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