25g Threaded CO2 Cartridges
Recommended by Syd and Macky
We always carry a CO2 cartridge and inflator head for quick flat fixes. If you run 29" mountain bike tires, make sure you carry 25g CO2 cartridges as the smaller (20g and 15g) cartridges won't completely fill a flat 29x2.4" tire. The brand doesn't matter, just make sure you get 25g ones that are threaded.