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ST-331

SOTO TrekMaster Stove

1 Artikel verblieben

2026-03-19 2026-03-26

Bringing Japan's mountains closer to you! This

lightweight, compact, and liquid-flow CB stove is designed for mountain use. It maximizes
the performance of the CB TOUGH125 (ST-711) and CB TOUGH220 (ST-712).

Its liquid-flow combustion design with built-in generator minimizes heat loss due to drop-down, providing stable heat. The
igniter, the most vulnerable component of any burner and known for its unreliability at high altitudes, is deliberately
omitted to reduce weight and eliminate any risk. The separate design allows for a lower center of gravity than the ST-350, ensuring stable use even on uneven terrain. For

light hiking, camping, and other activities that don't require high gas specifications, you can use the affordable ST-700 regular gas.
By choosing the right fuel for each purpose, you can achieve excellent cost performance.

Features

  • Lightweight and compact with no unnecessary extras
    : The separate stove weighs just 195g.

     

  • Its compact storage size of 90mm wide and 70mm deep fits perfectly within the diameter of a 450ml mug.

  • Liquid combustion structure: The
    liquid combustion structure supplies gas to the burner in liquid form, vaporizes it in the generator, and then burns it. This
    eliminates the drop-down that occurs when gas evaporates inside the cylinder, providing stable heat for long periods of time.

  • The fuel is a cost-effective CB can, and
    it is compatible with all CB cans, from relatively inexpensive regular gas to CB_TOUGH, which has the same specifications as an OD can.

  • "Intentionally" no piezoelectric device (igniter) is included.
    The piezoelectric device (igniter) is the most vulnerable part of any combustion appliance and is unreliable at high altitudes. By intentionally omitting it, we have reduced weight and eliminated the risk of failure.
    Please use a separate ignition device, such as a match or flint lighter, to light the fire.

  • Highly safe stainless steel
    trivet: Stainless steel prevents the trivet from heating up due to heat conduction, reducing the risk of burns if you accidentally touch the trivet.

  • The separate combustion unit has a very low center of gravity of 105mm
    , allowing for stable use even on uneven ground.

  • Storage Pouch
    : Comes with a water-resistant, strong, and safe Tyvek storage pouch.

  • Product Dimensions

  • How to use (ignition/extinguishing)

Specs

  • Product size

    Width 500 x Depth 140 x Height 105 mm (when in use, including hose)
    Width 90 x Depth 70 x Height 105 mm (when stored, including hose)

  • weight

    Approximately 195g

  • Material

    Burner/Appliance valve knob/Trivet: Stainless steel
    Cylinder holder: Resin
    Storage pouch: Tyvek

  • Country of origin

    Japan

  • Heat generation amount *1

    2.8kW (2,400kcal/h) (when using ST-760)
    2.3kW (2,000kcal/h) (when using ST-700)

  • Usage time *2

    Approx. 1.2 hours (using one ST-760)
    Approx. 1.5 hours (using one ST-700)

  • Fuel used

    SOTO product container (cassette gas type)

  • Ignition method

    Please use a separate ignition device such as a match or flint lighter. *This product does not have a piezoelectric device.

  • accessories

    Storage pouch (material: Tyvek)

  • Load-bearing capacity

    2kg

  • operating instructions

    ST-331_manual_2502.pdf

  • Advice Notes

    ST-331_advice.pdf