Azur CO2 Replacement Cartridges are built for riders who want fast, reliable tyre inflation when a flat tyre threatens to end the ride early. These compact CO2 cartridges pair with a compatible inflator head to get your bicycle tyre back up to pressure in seconds, so you can keep moving instead of standing roadside pumping.

Whether you’re commuting, racing, or heading out for a long weekend ride, CO2 cartridges are about speed and convenience. Carry one for emergencies or stock up with larger pack sizes if you ride often. You choose the quantity that suits your riding style, and the more you carry, the better value it becomes.

Who are these CO2 cartridges for?

Ideal for riders who want a quick inflation solution without carrying a bulky pump. Perfect for road cyclists, commuters, triathletes and anyone running lower-volume tyres who values minimal weight and fast roadside repairs. If your goal is to fix a puncture quickly and get rolling again, these make sense.

Who is this not for?

Not the best choice for mountain bikes, gravel bikes with large-volume tyres, or fat bikes where higher gas volume is needed. Riders who prefer precise pressure control or who regularly adjust tyre pressure mid-ride may still prefer a traditional mini pump.

Why we love it

We’ve found 16g cartridges hit the sweet spot for road, gravel and most mountain bike riding. They inflate a tyre quickly without taking up unnecessary space, and they’re light enough to forget you’re carrying them until you actually need one. Simple gear that solves a problem fast is always a win.

Hot tip!

CO2 escapes faster than regular air through inner tubes. After using a cartridge to get home, it’s worth deflating and reinflating your tyre with a floor pump later for longer-lasting pressure.

Item specs

• Brand: Azur
• Product type: Threaded CO2 replacement cartridges
• CO2 capacity: 16 grams per cartridge
• Cartridge type: Threaded
• Compatibility: Suits most threaded CO2 inflator heads
• Use case: Emergency tyre inflation and roadside repairs
• Approx inflation: 700x23c road tyre to around 100 psi (guide only)
• Material: Steel cartridge with compressed CO2 gas
• Size: Compact, pocket and saddle bag friendly
• Inflator head required: Yes (sold separately)
• Quantity options: Multiple pack sizes available (customer choice)