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Last updated January 1st, 2020
Opting-in to Moosejaw Rewards:
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The MSR Trailshot Microfilter is a water filter for moving fast on the trail. Whether on foot or bike, running, or just those that like to be quick about their adventure, this pocket-sized pal will fit in the stash pockets of your pack. Grab it, drink directly from the source via hose, then tuck it away and you're off on the trail again. Filtering 1 liter of water in 60 seconds, it gets the job done. Only weighing a total of 5 ounces, it's won't add extra weight.
The MSR Trailshot Microfilter is a water filter for moving fast on the trail. Whether on foot or bike, running, or just those that like to be quick about their adventure, this pocket-sized pal will fit in the stash pockets of your pack. Grab it, drink directly from the source via hose, then tuck it away and you're off on the trail again. Filtering 1 liter of water in 60 seconds, it gets the job done. Only weighing a total of 5 ounces, it's won't add extra weight.
FEATURES of the MSR TrailShot Microfilter
Sized to easily fit in stash pockets, jacket and clothing pockets, and small packs or belts
Allows you to drink directly from water sources on the trail for quick hydration
Can also be used to fill water bottles, vessels, or hydration reservoir with clean water
Requires no set-up, and the simple one-handed operation can filter one liter in a mere 60 seconds
Simple to clean with a few shakes to help restore flow rates in the field; no tools required
Practically weightless weighing in at 5 ounces / 142 grams
Tested to meets U.S. EPA drinking water standards and NSF protocol P231 for removal of bacteria (99.9999%), protozoa (99.9%), and particulates
Made in USA
Product Specifications
Features:
Made in USA, Field Cleanable, Ultralight
Weight:
5.2 oz
Dimensions:
6 x 2.1 in.
Filter Rate:
1 liter / minute
Ultralight:
Yes
Awards:
National Geographic Adventure Gear of the Year Award - 2016
Disclaimer:
We only ship this brand to US Addresses.
Best Use:
Trail Running, Mountaineering and Alpine, Hiking
Effective Against:
Protozoa and Bacteria
Filter Type:
Pump
Product Reviews
Rated 1 out of
5 by
Scott T. from
2nd failure of new TrailShotWent on a long day scramble to Bean Peak in the Teanaway Washington State. This is my second failure of a TrailShot, this time the filter was brand new, first time use and all I could get was bareley a teaspoon with each hand pump. There is either a manufacturing or engineering flaw with this product causing these type of reported failures. I love MSR products, the stoves, tents, snowshoes. and my current Mini Works filter that I still use all ay back when it started out as a two stage carbon and paper filter. Having said that the TrailShot has a problem that needs to be fixed and I hope MSR is working for a solution.
Date published: 2023-03-02
Rated 1 out of
5 by
freskosb from
CrapThe first time I used this was in a very clean stream. The second time was also in a very clean stream, but the filter was so clogged up from the first time that the flow rate had slowed to a dribble. Literally only tiny droplets would come out. Took me an hour to fill up a Nalgene. Luckily I had brought Aquamira, which enabled me to survive through the rest of my trip. I tried cleaning out this filter when I got home but it’s still useless. Everything I’ve ever bought from MSR has been terrible. Only company whose products I’ve ever had a real problem with. Not sure why they’re still in business. Will never buy anything from them again.
Date published: 2023-01-07
Rated 3 out of
5 by
Scott R. from
Worked great for 7 daysI love this filter and used it in western Oregon for 7 days on the trail last year with great success but this year when backpacking with my son it had very little flow. Hardly even used it and I needed it. I tried to free it up as suggested but now looking to replace the guts for about the price of a new one.
Date published: 2022-10-11
Rated 3 out of
5 by
Sasha P. from
Trail shot MSRonly used it a handful of times last summer. Used it last night on a bike packing trip and seemed to be clogged and very slow flow. I like the compact size for bike packing but I had a hard time using it efficiently on my trip ! I took care of it well but didn’t last.
Date published: 2022-08-11
Rated 4 out of
5 by
Kendall G. from
Works well for a quickWorks well for a quick filter on the go. As far as filtering multiple bottles worth of water, it would be kind of annoying but doable. Very simple, easy and light.
Date published: 2022-07-13
Rated 2 out of
5 by
Shane from
Easily CloggedI have only filtered approximately 2 liters of water through my trailshot. 1 liter was tap water just to test it's function. The other liter was from water that had virtually no sediment in it. It worked fairly well for these instances. I then stored the filter for about a year, and when I tried to use it again it had no flow. I flushed it as per the owner's manual 5 or 6 times but the flow rate would not restore, as advertised. And the cost to replace the filter did not match the performance I was given. Overall, I would not rely on this filter, especially in the backcountry. I have used katadyn filters and they worked very well, I will likely continue using them.
Date published: 2022-05-08
Rated 2 out of
5 by
Paul L. from
My Trail Shot clogged after little use in clean water.I guess I have the same complaint as so many of the other reviews. When it works, it is wonderful. But mine has about 1/3 of the original flow after very little use under relatively optimal conditions. I wonder if you could advise me on maintenance, how to back flush, etc. Would freezing cause clogging?
Date published: 2022-04-14
Rated 5 out of
5 by
Helena from
SatisfiedUsed on one hike, works well so far. Vey comfortable to use (you don't have to float rubber bottles empty-handedly in cold stream water at -6C like with other filters). I hope it will last.
How do you know when the filter has reached its maximum cleaning capacity to operate at full functionality? Also, can you/should you backwash the filter?
Asked by: Dean
Hey Dean,
Thanks for the question. You can backwash this by shaking it! As for checking the filter, MSR recommends doing the following steps to check it's functionality:
1. Hold the filter at about 45° and prime it by squeezing the Bulb (G)10 times. 2. Pump 3/4 liter of water into a bowl or pot.
3. Unsnap the Prefilter (M) from the Female Check Valve Housing (L) (put it in a safe spot).
4. Unscrew the Female Check Valve Housing from the Male Check Valve Housing (J).
5. Remove the Check Valve (K) and reverse its direction. Place it back into the Female Check Valve Housing.
6. Screw the Female Check Valve Housing back onto the Male Check Valve Housing.
7. Remove the Spout (B) and Umbrella Valve (C).
8. Place the Cap (D) into the bowl/pot of clean water and pump 1/2 liter of clean water backward through filter.
9. While the Cap is still submerged, squeeze and hold the Bulb. Then remove the Cap from the water and release the Bulb.
10. If Bulb re-inflates within 30 seconds, the filter is NOT SAFE. (NOTE: If a few bubbles escape the Check Valve, unscrew the Female Check Valve Housing, reseat the Check Valve, and screw the Female Check Valve Housing back onto the Male.) Then test the filter again.
11. If Bulb stays compressed, the filter is safe to use.
Answered by: Rocko Gigsby
Date published: 2021-04-10
How to store for the season?
Asked by: Seabreeze
Thanks for the question! Below are the pack & storage instructions for your filter. I also included a link to the manual. Hope this helps!
1. Remove Prefilter from water.
2. Squeeze Bulb to purge excess water.
3. Replace Clean Side Cover.
4. Before long-term storage, remove Filter Cartridge (See “Replacing the Filter
Cartridge”) and let Bulb and Filter Cartridge dry out at room temperature for
at least one week. 5
https://d1l67pfsx3wblg.cloudfront.net/pdf/TrailShot%20Web_Instructions%20EN.pdf
Answered by: Foxxy Cleopatra
Date published: 2021-04-10
It is "field cleanable to restore flow" - but does the filter ever need to be changed? If yes, how much are they?
Asked by: Dave
Hi there Dave!
The MSR Trailshot's filter does need to be changed after filtering 2000 liters of water. We do carry the replacement filters:
https://www.moosejaw.com/moosejaw/shop/product_MSR-TrailShot-Replacement-Filter-Cartridge_10334738_10208_10000001_-1_
Happy hydration!
