So I picked up one of those co2 charged refill solutions, I'd never really needed one for my mountain bike cause well... not much volume and I didn't race XC but I'd rather not have to pump up one of the tires on my new XT or on the RM by hand.

Anyway, the Ultraflate2 uses a proprietary co2 cart to lock you in with consumables, of course they also WAY overcharge for them at $4 a pop. Considering the fact that a 12gram co2 from Crossman goes for about 50 cents, I'd much rather use those. Ultraflate took that into consideration, so they made their proprietary cans longer than the standard ones you can find anywhere.

So what do you do? Drop a dime on them, so to speak.


So measuring their tank in the device we see that it sticks out just a bit and measures a total of 3.53" If you drop a standard 12gram in there it will not stick out past the top, preventing it from functioning in the device.


Take a dime


Drop it in there and put in a normal 12gram co2 and crank it down, not overtight, but you'll need to put a slight dent in the dime, so a bit of force.


Once complete, back it off and drop in a fresh co2 and look, it measures out at 3.54"


How much does this save you? Well, 25 of the 12gram carts will run you $12.50 and 25 of the proprietary ones will set you back $100.