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Pack MSR's compact, easy-to-use Reactor Stove system, and experience a new world of camp stove efficiency.

The MSR Reactor Stove seamlessly integrates a radiant burner, a heat exchanger, and a high-efficiency pot to provide you with a windproof, crazily fuel-efficient stove system for all conditions. So efficient is the Reactor Stove that it boils one liter of water in under three minutes so you can enjoy a quick, hot cup of tea in the morning before packing up for the ascent.

  • MSR's heat exchanger encloses the radiant burner, providing super-efficient fuel burn
  • Internal regulator puts out a consistent flame throughout the life of the canister and combats gusty winds and cold
  • Integrated stove-and-pot system increases fuel efficiency, nests together for convenience, and makes the system easy to set up
  • Package includes: Reactor stove, 1.7L hard anodized aluminum pot, handle, and BPA-free lid
  • Note: fuel canister sold separately

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Here's what others have to say...


Love It.

  • Familiarity:I've put it through the wringer

This thing is great, very lightweight and brings water to a boil fast! I take this when I am cooking for two people because the size is a little overkill for one person. The design is great and does awesome in the wind. It packs up nicely in to a stuff sack and the canister and stove fits perfectly inside of the pot.


THE Mountaineering stove

  • Familiarity:I've put it through the wringer

Melts water incredibly fast, it works much better than my white gas stove in cold temps. You can't regulate temps as well with this, but the efficiency is well worth it for snow based camping or mountaineering where the primary goal is making water from ice and snow. I'll stick with my Dragonfly for actual cooking, but this is the best choice for making a ton of water in a hurry.

" You can't regulate temps as well with this, but the efficiency is well worth it for snow based camping or mountaineering where the primary goal is making water from ice and snow. I'll stick with my Dragonfly for actual cooking, but this is the best choice for making a ton of water in a hurry. '
not cooking,,,,,making water....

Any idea how the propane / butane canisters can be safely emptied / disposed of if they are over the 3 year shelf life?

Honestly I would just run the stove and use them up. I imagine (but do not *know*) that the shelf life is more to ensure that they still have sufficient pressure since gas could very slowly leak out over time.

Best Answer

We strapped an M80 to one. It was a loud bang, then a big white cloud sprayed out followed by a big fireball. It was fairly cool but not the giant Hollywood explosion we were hoping for .

Shelf life? I have never had any trouble with any canister even if it was over three years old.

Check out the jet boil crunchit. It drains the left over fuel and easily punctures the top of the canister so you can recycle it.


High Altitude Boil Champ

  • Familiarity:I've put it through the wringer

For boiling water QUICKLY at higher altitudes (9500-15,000 feet) and in the wind, the Reactor is the champ. After several years of use in the Andes of Peru and Ecuador, I remain thrilled with this purchase. The extra effort needed to keep the canister somewhat warmer is a small price compared to the time it takes to prime and wait for a white gas stove. If I was running solo, I'd take another look at JetBoil but for two or more, I'll stick with the Reactor. You can boil, eat and be in the bag before your white gas buddy has warm water. I tried to cook in it once and was a bit frustrated trying to control the output so I stick to its strength - super fast boils.


Aconcagua Tough!

  • Familiarity:I've put it through the wringer

Worth $500 when your melting snow at 19000ft in 40 mph winds and still getting the job done. MSR won with this stove for sure! Walked on Jet Boils when I was up there!

Reactor and K2

Reactor and K2

Using a jetboil hanging system on a Reactor at Broad Peak Camp 1.


Great Stove

  • Gender:Male
  • Familiarity:I've put it through the wringer

Ive used this stove in many different situations. Its boils water and melts snow exceptionally fast and its very compact making it easy to carry and store. The only gripe we had with this is when it gets really cold. If your winter camping plan on sleeping with the canisters in your sleeping bag, or having an XGK to heat up water to heat the canister. If it is not warm it does not output the maximum amount of heat and you end up wasting fuel. Overall a very reliable stove just needs some TLC to keep it warm.

Great Stove

This is a problem with the fuel, not necessarily because of the stove. I have this problem with all my canister stoves. I put a little water in a container and sit the canister in it and it helps quite a bit.

Yeah, I had never used it in that cold of temps before, missed some beta on that for sure before our trip. Next Year looks like Jetboil is coming out with a stove to match the Reactor but, it puts the canister upside down to make the fuel come out much more efficiently. Sounds interesting, currently they only make it in a 2.5 L pot, waiting for them to come out with a liter option as the 2.5 is a bit big for a 2 person trip.



    This stove boils water so fast. It is unbelievable. It is lightweight, and it is compact. I think the msr logo on the burner is a really cool feature, plus it gets a lot of "whoas" at camp. I woke up in the middle of the night once freezing, knowing that if I didnt get warm soon, we were going to have an issue. I took this outside, and had myself 2 boiling hot nalgenes in a matter of minutes. My only gripe is that I wish it had a piezo lighter, so I didn't always have to have matches with me. This stove has saved my butt. Excellent, fast boiling stove.


    Incredible at melting snow

      If you're heading out for some winter camping and need to melt snow. This is the one and only stove you need. Melts snow faster than anything I've seen. It uses a bit more fuel than others, but when you can be done melting snow 15 minutes faster than anyone (or anything) else, it's well worth it. Simmers pretty well and is fairly light.


      Great system

        It all stacks together neatly, which is cool, but the main thing is how amazingly fast it boils water or melts snow. It's incredible. MSR also makes a separate piezo igniter that's pretty neat.

        I usually figure 1 large fuel canister for 2 people for 2 days.

        The downsides are that fuel is less flexible than other stoves such as my msr dragonfly which I've run on various gasoline in foreign countries.. You have to have the canisters. But this stove is way better for backpacking in the cold.

        If its very cold though you'll need to keep a canister in your jacket/sleeping bag for it to flow correctly. My last "gripe" is that there's no way to recycle the spent canisters. It'd be great if MSR had collections at various retail stores for the used canisters.

        Overall the best stove I've seen for everything except places where you can't buy or carry enough fuel.

        Great system
        Unanswered Question

        Any idea how soon these will be back on...

        Any idea how soon these will be back on stock? Thanks.



        • Familiarity:I've put it through the wringer

        Awesome. You hear about people who hate any stove that uses these fuel canisters.. For one or two people this stove pot system rocks. I have been looking at getting the larger pot sold separately. I just feel that once you start getting into needing a larger pot you should move into a fuel bottle stove system and spread the load amongst those in the party.