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Keep it flowing.

After countless trips and innumerable field cleanings, your MSR Hyperflow is pumping a little slow. Pop in a Hyperflow Microfilter Cartridge Replacement and get fresh, fast water purification on your next backcountry excursion. This filter cartridge lasts for up to 1,000 liters of pumping depending on water conditions, and can be cleaned in the field to keep your filter flowing strong.

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MSR Hyperflow Microfilter Cartridge Replacement

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Here's what others have to say...

1 5


I have had a horrible experience with my HyperFlow.
Bought it. Used it twice, remembering to backflush it every 4-8 liters. Flow became horribly slow. Purchased a new filter had the same experience, but this time I got maybe a gallon before the flow slowed. Backflushing did no good. The water was clear. Called MSR and they sent me a new filter. Same experience.
I do not trust the MSR HyperFlow and would not recommend it at all.

4 5

Works great

Filter is a direct replacement for my Hyperflow. Full service is restored. I was familiar with the backflow flushing technique, so replacing the filter was very easy. 2 minutes for those who have not done it before.