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    Unboxed my brand new YT Jeffsy Core 2 today and the front rotor seems bent. Is this acceptable?

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    17 Comments

    1. gnarlygroove on

      Hey everyone! I just unboxed and assembled my new bike and was a little bit surprised to find that the front rotor was rubbing. “No big deal I guess, I probably just need to realign the caliper”. Upon further inspection (attached video) I noticed that the rotor seems to be moderately bent. Maybe something happened during shipping? Bummer.I haven’t really touched anything else. I don’t think realigning the caliper will do much because the wobble seems significant. I could try to bend the rotor back but it feels wrong since the bike is literally brand new. Everything else is impeccable, including the rear rotor. Should I get in contact with YT or suck it up? Many thanks!

      Edit: I’ve fixed rotors on my previous bikes before, I understand that it’s simple. The question is simply because I had never heard anything about having to bend a rotor to alignment on a brand new bike. It almost seems like shipping the bike without the rotors installed would be better as it’s even easier to install a properly packaged 6 bolt rotor than to bend it straight.

    2. Dhydjtsrefhi on

      Even out of the box rotors often are out of true. A friend of mine works as a mechanic and he often needs to straighten them before selling them.

    4. spankymcjiggleswurth on

      Rotors are thin wafers of metal that bend just by looking at them with too much force. You could try to get YT to send something new and have it take days to weeks to arrive, or you could spend a few minutes lightly bending it back yourself. It’s not hard, just don’t over bend it and make it worse.

    5. VaguelyIndirect on

      You’ll be able to straighten that with some gentle persuasion just using your hands

    8. roscomikotrain on

      The rotor may not be bent- the calipers need to be re-aligned.

      Simple fix- this isn’t a warranty issue

    10. coloradoemtb on

      I would bend that back. Use the brake pads as a guide where to bend it. Overbend a little to the other side and it should straighten it out a bit. All of my 200 and up rotors have some warpage.

    11. poncemen on

      totally normal that a new bike needs some adjustment on brakes, especially if unboxed by yourself.

    13. darthnilus on

      Park has a rotor straightener tool for stuff like this. I have one in my tool box just incase.

    14. wrenches410 on

      That is very out of true. If you have never trued a rotor, take your time. There are tools for this that work very well, but if you do not want to purchase them you can use an adjustable wrench to SLOWLY bring it back straight. Patience is key here. A vast majority of rotors are not true out of the box but yours is out a bit more than average, still- it’s repairable.

    15. d_mo88 on

      Mine was worse than that. I contacted YT, they had me send them a video, and they sent me out a new one. Mine was actually rubbing the caliper.

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