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  • No idea hence the question. I guess supply and demand dictate they don't however found this:
    Jan Heine, Editor, Bicycle Quarterly says:
    February 22, 2014 at 6:25 pm
    We’ve had no problems running the “standard” version tubeless. The “extralight” casing is more porous, so it can take a little more patience to seal. I have several friends who have run the Grand Bois Extra Léger tires tubeless…

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