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Portland Design Works CO2 20 Count Box lets you stock up on cartridges so you don’t have to waste time constantly re-upping your CO2 stash. The 16-gram, threaded CO2 cartridges are compatible with most inflators and fit easily into your jersey pocket or seat bag. And you don’t have to worry about any freezing ooze ruining your inflator or valve stems because Portland Design Works’ cartridges run clean.

  • 20 16-gram, threaded cartridges
  • Compatible with most inflators
  • Stow easily in your jersey pocket or seat bag
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Portland Design Works C02

  • Familiarity:I've used it several times

I liked the idea of these being sold in bulk. Because I ride alot and it's nice to always know you'll have something around to fix a flat. less trips to the store means money saved and more biking. Goal!

Buy in Bulk

  • Familiarity:I've used it several times

Do yourself a favor and bite the bullet now. You're going to use them eventually right? As for performance, they are metal cylinders filled with co2. They arrived full of co2 and have not exploded in my backpack yet so that's pretty much all I can ask of them. They are definitely very shiny, so if you're into that you'll be extra pleased with them.

Don't pump like a chump, show up with co2 cartridges to spare.