• How long does the sealant last/when will I need to top up? Also when I need to top up is there a limit on how many time I need to top up before I need to replace the inner tube?

  • yeah, make sure you buy inner tubes with removable valve cores for this, and then use leatherman pliers or a special valve core remover tool to add the sealant.

  • This makes a lot more sense as I didn’t see any removable valves on the standard Brompton inner tube...

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