Mares carbon 42

The Mares Carbon 42’s second stage is made from chopped carbon fibers sandwiched between two sheets of carbon composite for a strong, lightweight casing.

It has no user controls, but uses a specially shaped Fluid Dynamic Deflector and Mares’ Vortex Assisted Design (VAD) air-bypass tube.

A redesigned Mesh Grid minimizes free-flows when fighting a current, and the tiny MR42 first stage uses Mares’ Tri-Material valve and Dynamic Flow Control.

The Carbon 42 is a solid performer. It handled all breathing-machine tests with above-average marks and was simple to use, easy to breathe and bone dry in the water. We liked the Superflex hose too.


  • Weight 2 lb., 3 oz.
  • 1st Stage Balanced diaphragm
  • Ports 2HP, 4LP
  • 2nd Stage Unbalanced
  • Adjustments N/A

Price: $1,000

Bottom Line

This system delivers the goods and would be excellent for extreme temps, but it’s a little pricey.

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