2021 EOLO III - CO2 Regulator with 2 Ultra Premium Cartridges

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Please note: This product can only be shipped in the US only. Due to restrictions, the compression of the cartridges cannot ship out of the country. Thank you for your patience.

What is it?

The smallest spool valve CO2 regulator on the market combined with two of our ultra-premium 16g CO2 cartridges. 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 paired with two 16g cartridges.

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.


  • Package contains EOLO III Regulator with Red-White-Green Insulators
  • 2 Ultra-Premium 16gm CO2 Cartridges
  • 1 SILCA Cartridge Helmet
  • Lightest spring action of any spring-valve regulator
  • 'Camera-lens' style valve head allows for easy installation even in disc wheels