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Silca EOLO III - CO2 Regulator + 16gm Cartridges


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  • Red, One Size

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For the control freaks.

CO2 cartridges have always been a fast, easy way to re-inflate after a flat. It’s also been rather crude, though, because of the inherent lack of control. Silca is changing that with the EOLO III CO2 Regulator. The EOLO III lets you switch the airflow on and off for a perfectly inflated tire with no wasted.

The EOLO III is made completely with aluminum and stainless steel. Three rings on the regulator’s body provide grip and protect your fingers form the cold flow of the CO2. The EOLO III comes with two of Silca’s 16-gram CO2 cartridges, which contain 15.5 to 16 grams of CO2, rather than the industry-required 14.

  • Gives you control over airflow
  • Rings for grip and comfort
  • 2 16-gram cartridges included
  • Item #SLC000C

Alcoa Aluminum, Stainless Steel
Valve Type
Presta, Schrader
Recommended Use
inflating flat tires

Tech Specs

What do you think about this product?


>Rating: 4

Works for me.....

I've put it through the wringer

Light, compact, and sturdy. Can be a little awkward to depress, but easily correctable after you have used it once.

>Rating: 4

did the job, very compact

I've used it once or twice and have initial impressions

I've only had to use it once and I tested it once just to get an idea how to work it. worked well for a small compact unit. nice that it has some control over air flow. not quite as good as the slightly bigger non threaded units but if you are saving space it works.

>Rating: 3

Worked for me

I've used it once or twice and have initial impressions

I've only had to use this CO2 pump once, when a friend of mine had a flat on the trail, but it was quick and easy to get done. No complaints from me.

>Rating: 1

Left me stranded

I've used it once or twice and have initial impressions

The first time I tried this inflator it pulled out the valve stem when I unscrewed it - wasting a CO2 cartridge. I grabbed my second cartridge and this time the inflator got stuck on the valve stem. Nothing I could do to remove it. Had to break the valve stem to get it off. Now I was totally stranded on the road and had to call for pickup. I've used several different inflators and pumps from different manufacturers and never had an issue like this. Valve stem still stuck in the inflator so I had to toss it. Total loss.

I would second the one star rating. The problem I've had (the two times I've needed to use it and couldn't, including today) is that the spool valve seizes in the housing, preventing compressing the valve so the CO2 can flow into the tube. I can take a pair of pliers and compress it (i.e. force it) and then it works fine. Trouble is, it sits for a week or two and it seems to freeze up. I suppose i could free it up before every ride to make sure it works, but that is hardly confidence inspiring when you are 30 miles from home and wondering if it is going to work. Maybe the III version is improved but for a pricey item (but seemingly very high quality) that isn't reliably functional I really just can't recommend it (as much as I like the other Silca products I have.

>Rating: 5


I've used it several times

Silca does not make cheap stuff. They don’t source cheap material, and they definitely go all out on design. This may look like the average CO2 inflator, but it’s hardly that. Made from 6063 series aluminum and stainless steel, this piece allows the ability to regulate the flow of air with design, precision, and function at the forefront. When I purchased this I realized I already had 3 other inflators, but now I can say I truly have ONE.

>Rating: 5

What the pros use

I've used it several times

Most of the top pros in endurance MTB racing are using this valve. It's very well made and worth the cost.