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MSR MiniWorks EX Microfilter Water Filtration System

Mfg PartNum:56425
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The MSR MiniWorks EX Microfilter delivers long-lasting, field-maintainable water filtration in demanding environments. Engineered for frequent and heavy use, it utilizes MSR's workhorse Marathon™ EX carbon/ceramic element to ensure clean, reliable and taste-free water. Thanks to its innovative AirSpring Accumulator™, it's capable of pumping one liter per minute and the flow rate can be renewed easily and repeatedly in the field — no tools required. It's lightweight and compact and, most importantly, been proven reliable by thousands of adventures through rough, challenging terrain.


  • Pumps 1 liter of filtered water per minute with the AirSpring Accumulator™.
  • Marathon™ EX carbon/ceramic element ensures safe, taste-free water even with frequent use.
  • Meets NSF protocol P231 for 99.9% removal of bacterial and protozoa in worst-case water.
  • Claimed weight: 460 grams.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Discount Codes are not applicable to Closeouts.

This product is NOT Eligible for VIP Points.

Mfg PartNum: 56425 

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