A practical choice for road, gravel and mountain bike riders who carry a compatible threaded CO₂ inflator for fast puncture repairs.
The ZEFAL CO₂ 16 g Cartridge x2 Pack gives you two compact cartridges for rapid tyre inflation when a puncture brings your ride to a stop. CO₂ inflation gets air into a tyre in seconds, helping you spend less time roadside and more time riding.
Each cartridge uses a 3/8''–24 UNF threaded connection for a secure fit with compatible threaded CO₂ inflators. Check your inflator before ordering, as this pack is intended for threaded systems rather than push-fit cartridge connections.
Made from 100% recyclable steel, the pair is easy to carry as part of a compact emergency kit. The pack weighs 118 g and each cartridge measures 89 x 22 mm, so it takes up little room in a jersey pocket, saddle bag or tool roll. CO₂ cartridges are single-use, so carry a spare cartridge if you want backup for a second puncture. Empty cartridges should be disposed of through a recycling service that accepts steel. Store and handle them carefully: they contain gas under pressure and may explode if heated.
Two 16 g cartridges
A convenient pair for your repair kit, with a spare available for another puncture or a failed inflation attempt.
Rapid inflation
CO₂ delivers a quick blast of air, helping you get a repaired tyre back up and continue your ride promptly.
Threaded connection
The 3/8''–24 UNF thread provides a secure connection with compatible threaded CO₂ inflators.
Compact carry size
At 89 x 22 mm per cartridge, the pair is easy to pack in a saddle bag, jersey pocket or tool roll.
Steel construction
Made from 100% steel for a robust cartridge that is also fully recyclable through an appropriate steel recycling service.
Useful emergency backup
Keep one cartridge in reserve for a second puncture, or share the pair on rides where you are travelling with a riding partner.
General
Dimensions & weight
Materials & construction
Compatibility
Safety, care & disposal
Quick air
Inflate your tyre in seconds when you need a fast roadside repair.
Threaded 3/8'' – 24 UNF connection
The standard threaded connection provides a secure fit with compatible CO2 inflators.
100% recyclable steel
The steel cartridge can be recycled after use through a recycling service that accepts steel.
French cycling accessories since 1880.
ZEFAL is a French cycling accessories brand with roots dating back to 1880. Its history traces back to E. Sclaverand, the inventor of the Presta valve, and the company later developed through Poutrait-Morin before adopting the ZEFAL name in 1998.
Today ZEFAL is based in Jargeau, Loiret, and focuses on accessories across road, MTB, gravel, urban and adventure riding. The brand is known for long-running product categories such as pumps, bottles, bottle cages and maintenance accessories, with a strong emphasis on French industrial know-how and ongoing local manufacturing.
