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Muc-Off · CO2 cartridge
A fast, no-fuss 25g CO₂ refill for getting mountain bike tyres rolling again after a flat.
$59.99
PriceIn stock, ready to ship
If you already run a CO₂ inflator on your mountain bike, this is the refill you keep in your pack for quick trail-side inflation. The 25g size suits higher-volume MTB tyres far better than smaller road cartridges, and it’s built around the same threaded format used by the Muc-Off inflator system.
Sold by Ashburton Cycles
Verified store
Price
$59.99
Cartridge size
25 g
Tyre inflation
Up to 30 psi from flat
Use
MTB
The Muc-Off 25g CO₂ Cartridge - MTB Inflator Refill is the simple fix for riders who want a fast way to get air back into a flat mountain bike tyre without reaching for a mini pump. It’s a 25g threaded CO₂ cartridge intended for MTB use, and it’s designed to work with the Muc-Off CO2 Inflator Kit for quick inflation on the trail.
For mountain bike tyres, cartridge size matters. A 25g cartridge carries a larger gas charge than the smaller road-style options, which makes more sense for higher-volume MTB tyres when you need a rapid refill after a puncture. Muc-Off rates it to inflate a tyre up to 30 psi from flat, which lines up with what most trail and all-mountain riders are actually aiming for rather than road-bike pressures.
The main reason to choose this refill is practicality: it’s compact, quick to use, and easy to stash as part of a puncture kit. It also uses the common threaded cartridge format, so if you already have a compatible threaded inflator head, it’s a straightforward spare to carry. As with any CO₂ setup, it’s best treated as a fast ride-saving option rather than your only inflation plan for long remote rides, and it pays to top the tyre up properly with regular air once you’re home.
Ideal for mountain bikers who already carry a threaded CO₂ inflator and want a quicker trail-side inflation option for higher-volume tyres.
25g MTB-focused cartridge
The 25g charge is better suited to mountain bike tyre volumes than smaller road cartridges, making it the more practical pick for trail use.
Fast inflation from flat
Designed for quick puncture stops, with stated inflation of up to 30 psi from flat for MTB tyres.
Threaded cartridge format
Uses a threaded design that works with the Muc-Off CO₂ inflator system and many other threaded inflator heads.
Built for puncture kits
Small and easy to pack, so it fits neatly into a saddle bag, frame storage setup or riding pack.
No hand pumping required
A handy option when you want to get rolling again quickly without the effort and time of a mini pump.
Best matched to MTB pressures
Well suited to the lower pressures commonly used on mountain bikes, where speed matters more than chasing very high PSI.
Every detail as listed by the manufacturer.
Muc-Off is a British bike care and maintenance brand that began in 1991, when Rex and Marilyn Trimnell started X-Lite UK. After developing the world’s first twin crown bicycle fork, Rex created the pink bike cleaner that became the foundation of the Muc-Off brand. The company has since expanded well beyond cleaners into a broader range of cycling maintenance, tubeless, inflation and performance products. Muc-Off is based in the UK and has built a strong presence across both everyday riding and top-level racing.
Muc-Off · CO2 cartridge
A fast, no-fuss 25g CO₂ refill for getting mountain bike tyres rolling again after a flat.
$59.99
In stockSold by Ashburton Cycles
Cartridge size
25 g
Tyre inflation
Up to 30 psi from flat
Use
MTB
Gas
Carbon dioxide
If you already run a CO₂ inflator on your mountain bike, this is the refill you keep in your pack for quick trail-side inflation. The 25g size suits higher-volume MTB tyres far better than smaller road cartridges, and it’s built around the same threaded format used by the Muc-Off inflator system.
The Muc-Off 25g CO₂ Cartridge - MTB Inflator Refill is the simple fix for riders who want a fast way to get air back into a flat mountain bike tyre without reaching for a mini pump. It’s a 25g threaded CO₂ cartridge intended for MTB use, and it’s designed to work with the Muc-Off CO2 Inflator Kit for quick inflation on the trail.
For mountain bike tyres, cartridge size matters. A 25g cartridge carries a larger gas charge than the smaller road-style options, which makes more sense for higher-volume MTB tyres when you need a rapid refill after a puncture. Muc-Off rates it to inflate a tyre up to 30 psi from flat, which lines up with what most trail and all-mountain riders are actually aiming for rather than road-bike pressures.
The main reason to choose this refill is practicality: it’s compact, quick to use, and easy to stash as part of a puncture kit. It also uses the common threaded cartridge format, so if you already have a compatible threaded inflator head, it’s a straightforward spare to carry. As with any CO₂ setup, it’s best treated as a fast ride-saving option rather than your only inflation plan for long remote rides, and it pays to top the tyre up properly with regular air once you’re home.
Ideal for mountain bikers who already carry a threaded CO₂ inflator and want a quicker trail-side inflation option for higher-volume tyres.
25g MTB-focused cartridge
The 25g charge is better suited to mountain bike tyre volumes than smaller road cartridges, making it the more practical pick for trail use.
Fast inflation from flat
Designed for quick puncture stops, with stated inflation of up to 30 psi from flat for MTB tyres.
Threaded cartridge format
Uses a threaded design that works with the Muc-Off CO₂ inflator system and many other threaded inflator heads.
Built for puncture kits
Small and easy to pack, so it fits neatly into a saddle bag, frame storage setup or riding pack.
No hand pumping required
A handy option when you want to get rolling again quickly without the effort and time of a mini pump.
Best matched to MTB pressures
Well suited to the lower pressures commonly used on mountain bikes, where speed matters more than chasing very high PSI.