As road tires continue to grow in volume and gravel cycling gains popularity, riders are finding that traditional 16 gram CO2 cartridges don’t always meet the demands of modern setups. That’s where 20 gram cartridges come in. Offering 20% more air volume than their smaller counterparts, these cartridges provide the extra inflation capacity needed for today’s wider road and gravel tires. Despite the increased capacity, the physical size of the 20 gram cartridge is only marginally larger, making it an efficient upgrade for cyclists seeking quick and effective roadside inflation. These threaded cartridges are universally compatible, fitting any standard CO2 inflator with a threaded interface, ensuring versatility across various pump systems.

It’s important to understand how CO2 behaves in a tire. Unlike standard air, CO2 escapes more quickly through the inner tube or tubeless system, meaning the pressure you achieve immediately after a roadside repair may not hold overnight. For that reason, CO2 inflation should be viewed as a temporary solution—ideal for getting you back on the road quickly, but not a long-term fix. Always top off your tires with standard air from a floor pump or compressor once you return home or to your workshop. This small step helps maintain consistent performance and tire pressure while preventing potential flats from underinflation.

There’s also a safety consideration with CO2 use. When gas is rapidly released from a cartridge, it causes an intense drop in temperature, which can result in frostbite or skin damage if touched directly. Always handle the cartridge with care—use gloves or a protective sleeve to shield your hands during inflation. Spent cartridges can remain extremely cold, so be cautious when disposing or storing them immediately after use.

Lezyne’s 20 gram CO2 cartridges offer a reliable, efficient option for inflating modern high-volume tires. Available in convenient bulk packs, they reduce the hassle of running out and make a great addition to any cyclist’s repair kit. Whether you're racing, commuting, or exploring off-road, these cartridges help you fix flats fast and get rolling again with minimal effort.