TEPHRA 1 & 2

The TEPHRA is VOLCANO's first mech mod with interchangeable, color sleeves for peak customization. Build your TEPHRA from the inside out to make it just as unique as you are. For use with the “Cauldron” RBA.

Device Only Starter Kits
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A Mod For Every Mood.

Designed in Hawaii, each customizable TEPHRA has a precision machined 303 stainless steel core and removable 6061 billet aluminum sleeve.


Wear Your Heart on Your Sleeve.

Make the TEPHRA your own with interchangeable sleeves, in a variety of stylish colors.

tephra is one of a kind

Portability vs. Power.

The TEPHRA 1 features a compact design with an 18650 battery. The TEPHRA 2 features a longer lasting, 26650 battery.

Device Only Starter Kits

Cauldron 1 & 2 RBA.

For use with the TEPHRA, the Cauldron is an RBA with adjustable airflow and a copper center post for more resistance control. Removable aluminum sleeves allow you to mix and match colors with your TEPHRA.

Caldera RBA