The Lezyne 25g CO2 Cartridge (5-Pack) is a practical refill pack for riders who use CO2 inflation after a puncture. A 25 g cartridge carries more gas than a compact emergency cartridge, which makes it a sensible choice for mountain bikes and other higher-volume tyres.

Keeping several cartridges in the workshop, car or ride kit means you are not left searching for a refill after using one on the trail. Check that your CO2 inflator is compatible before use.

Key characteristics

• 25 g CO2 charge – a useful capacity for inflating higher-volume bicycle tyres after a repair.
• Pack of five – keeps several replacements on hand rather than buying cartridges one at a time.
• Lezyne cartridge format – a straightforward match for riders already using a compatible Lezyne inflator.
• For puncture repairs – suited to getting a repaired tube or tubeless tyre inflated quickly away from home.
• Good backup for MTB rides – useful when a mini-pump would take longer on a larger tyre.

On the trail

A CO2 cartridge is about getting moving again with minimal fuss. The 25 g capacity is particularly relevant when you ride MTB, where tyre volume can make a small cartridge less convenient. Carry one for routine rides or keep the rest of the pack as replacements; once a cartridge has been used, a fresh one is ready for the next repair.

Recommendation

Choose the Lezyne 25g CO2 Cartridge (5-Pack) if you already rely on a compatible CO2 inflator and want a sensible supply of higher-capacity cartridges for MTB rides, trail repairs and workshop spares.