Azur 25g CO2 cartridges make inflating bike tyres fast and simple. Perfect for mountain, gravel, and road riders, these threaded cartridges help you get back on the trail or road in seconds without a bulky pump. They give you the confidence of a complete tyre inflation whenever you need it.

These cartridges are ideal when you’re out on long rides, rough terrain, or remote routes and need a reliable way to inflate tyres quickly. With more gas than standard 16g cartridges, one 25g cartridge can fully inflate larger MTB, gravel, or fat bike tyres. Compact enough to carry in a saddlebag or jersey pocket, they let you stay moving without slowing down.

Who is this for?

Ideal for riders who tackle MTB trails, gravel paths, fat bikes, or high-pressure road tyres and want a lightweight, convenient solution for emergency tyre inflation. Also suitable for commuters and touring cyclists who want a fast roadside fix.

Who is this not for?

Not for riders with only standard road tyres or those who prefer using hand pumps exclusively. Smaller 16g cartridges are often enough for low-volume tyres, so a 25g cartridge may be overkill.

Why we love it

We’ve found these cartridges save time and stress during rides. Our favourite part is how simple it is to get a full tyre inflation without fuss, so you can focus on riding rather than worrying about punctures.

Hot tip!

Always carry a couple of cartridges on longer rides and check the expiry date before leaving home. Using a threaded inflator ensures a tight fit and prevents leaks, giving a full tyre inflation in seconds.

Item specs

• Brand: Azur
• Type: Threaded CO2 cartridge
• Gas capacity: 25g
• Dimensions: 105mm long x 25mm diameter
• Weight: approx 94g per cartridge
• Compatibility: Works with most threaded CO2 bike inflators