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  1. I switched my seigla to tubeless. I’d recommend that. And keep a plug kit on hand just in case. Much easier.

  2. What’s the problem with going to “MTB tubes”?

    A tube is a tube, and a fat gravel tire is just a narrow 29″ MTB tire.

  3. Check Pirelli. I use TPU tubes on my 650b 45mm and I’m fairly sure they make them for 700c 50mm too.

  4. RideNow and Cyclami make wide gravel TPU tubes. I’m tubeless but use these as emergency spares. They have 65mm valve stems too for my 50mm deep rims

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