EOLO III CO2 Regulator only

37 reviews

What is it?

The smallest spool valve CO2 regulator on the market.  Branded with our Italian heritage, the EOLO regulator is a new take on the oldest CO2 regulator head. 

Who's it for?

The cyclist looking for the smallest and most reliable CO2 Regulator on the market for those essential road-side repairs.

Why We Designed It | Product Specs

Why We Designed It:

In 1982 SILCA developed the first regulated CO2 inflator.  As Claudio himself explained, 'Before EOLO, you had to turn the cartridge and pray!'  Giving the user the ability to regulate the flow of gas into the tire was the key to widespread adoption of compressed gas for roadside use.   EOLO III builds on the SILCA tradition by using an ultra-precise spool valve design with light action spring to give the user perfect control of the flow into the tire.  The full metal construction of the EOLO III contains no plastic parts and is manufactured entirely from 6063 series aluminum and stainless steel.  Hardened tool steel puncture pin is more than 2X the hardness of traditional puncture pins to ensure smooth operation in all conditions over many years.


  • 6063 series aluminum body with Red-White-Green Insulators
  • Lightest spring action of any spring-valve regulator
  • Hardened tool steel puncture pin
  • 'Camera-lens' style valve head allows for easy installation even in disc wheels
  • Covered under SILCA's Lifetime Warranty


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Customer Reviews
5.0 Based on 37 Reviews
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Stuart B.
United States United States
It just works!

A simple and elegant solution to CO2 inflation. Put one in you kit, you may never need it but when you do you’ll love it!

Ben M.


So, I used it for the first time last night returning from a less than epic 30 mile ride. It worked great. And the little rainbow stripes actually did there job. Oh, the fact that you can regulate the flow is huge. Your stuff is great and I'm glad the classic name lives on. Thanks Silca

David D.

Don't change anything I have two. Just because!!

Abdulla A.