• Online:
  • URL for this product:
  • From the U.S. and CanadaCall 1-800-426-4840
  • Mon. through Sun., 4 a.m. through 11 p.m. PT.
  • InternationalCall 1-253-891-2500
  • Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.
MSR Reactor 1.0L Stove System

    MSR Reactor 1.0L Stove System

    High winds and freezing temperatures are enough to hamper the performance of many canister stoves. Not the MSR Reactor 1.0L. It excels on lightweight adventures in rugged alpine terrain. See details

    • $189.95

    Item # 849635

    REI Members get back an estimated $ 19.00 on this item as part of their annual member refund.

    The REI Member Dividend

    The REI dividend is a unique benefit of membership in the REI co-op. It's comprised of your member refund—typically 10% back on eligible purchases—and/or your REI Visa® card rebates.

    Each March, active REI members and REI Visa cardholders who earned a rebate receive a refund in the form of an annual dividend notice.

    Only active members receive annual dividend notices. To maintain your active status as an REI member, you need to make net merchandise or shipping purchases of at least $10 per year, unless you joined that year. Member numbers are issued in one name and only that person receives the member refund. Your number can be used by others in your family, but it cannot be transferred to someone else.

    Questions? Call us at 1-800-426-4840 for more about your dividend or its redemption.

    Learn more

    High winds and freezing temperatures are enough to hamper the performance of many canister stoves. Not the MSR Reactor 1.0L. It excels on lightweight adventures in rugged alpine terrain.

    Product size and color

    High winds and freezing temperatures are enough to hamper the performance of many canister stoves. Not the MSR Reactor 1.0L. It excels on lightweight adventures in rugged alpine terrain.

    • 100% Satisfaction Guaranteed
    • Gear and Advice You Can Trust

    This item ships for free! Learn more

    To view videos or use the zoom feature on REI's websites, please download the latest version of Adobe Flash Player.


    High winds and freezing temperatures are enough to hamper the performance of many canister stoves. Not the MSR Reactor 1.0L. It excels on lightweight adventures in rugged alpine terrain.

    • Reactor 1.0L stove system includes a 1-liter pot, making it ideal for light and fast adventures by 1 or 2 people.
    • Windproof stove cranks out heat in short order and keeps constant pressure for optimal fuel regulation and consumption
    • Burner features 2 modes of heat transfer, convective and radiant, to generate maximum heat output and boil 1 liter of water in about 3 min. 30 sec.
    • Internal regulation of fuel pressure creates a consistent flame in all temperatures and excellent performance throughout the life of the fuel canister
    • One 133g (4 oz.) fuel canister (not included) allows you to boil about 10 liters of water, meaning you need to carry less fuel and spend less money
    • Integrated heat exchanger fused to the 1-liter pot completely encloses the radiant burner, blocking even the most extreme winds
    • Whisper-quiet operation won't disturb your dinnertime discussions
    • Fuel canister (not included) and stove stow inside pot for compact storage; Reactor Solo system nests optimally with a small-diameter MSR 133g (4 oz.) IsoPro fuel canister
    • BPA-free lid features an integrated strainer to eliminate the hassle of draining water from noodles or steamed vegetables
    • Integrated pot handle locks in place over the lid for secure transport
    • MSR Reactor 1.0L system includes the stove, 1-liter pot with strainer lid and a PackTowl™ to protect the pot from scratches during transport
    • Due to flammable item shipping restrictions, we cannot sell fuel canisters online; they are available at REI retail stores

    Specifications based on manufacturers information

    Please note: MSR products can only be shipped to U.S. addresses.


    Item 849635

    Members: earn a
    $20 bonus card

    When you spend $100 April 14—29

    Single-use bonus card redeemable by
    REI members MAY 2—12, 2014.

    Not a member? Join Now!
    Add to Cart

    REI Membership

    MSR Reactor 1.0L Stove System Specs
    Best use
    (Per 8 oz. of fuel) 1 hr. 20 min.
    3 min. 30 sec.
    (Packed dimensions) 4.75 x 6.1 inches
    14.7 ounces
    Fuel type
    Auto ignition
    Burn time (max flame)
    Average boil time

    MSR Reactor 1.0L Stove System

    Loading Ratings & Reviews...

    MSR Reactor 1.0L Stove Systemis rated4.4286out of5by7.
    Rated5out of5byfromUpdate - Efficiency at its bestIn my previous review, I stated that I was having issues getting the stove to settle. After a few boils, it seems that the stove loosened up a little bit and the stove now seats a little looser. It is no problem to pack and remove the stove. I am much happier. Great product MSR.
    Date published: 2013-12-18
    Rated4out of5byfromEffeciency at its bestafter watching a friend cook with one of the 1.7L models for 3 years, I had to try a 1L version. While I am very happy with the practical and functional use, I am concerned about the packing. The stove boils water like no other. It is everything I expect from MSR ( i also have a whisperlite). But I am not thrilled with the way the stove packs. I understand that need for the new MSR canisters, but even with that, the stove itself sits so tight in the pot that I have to hold it upside down and knock on the bottom to get it out. Does anyone else have this issue?
    Date published: 2013-10-31
    Rated5out of5byfromGreat For Lightweight BackpackingMy wife and I used the MSR on a 7 day Sierra backcounty trip and it performed flawlessly. We wanted a lighter, faster, compact and cleaner stove. The MSR meets all of this criteria for us and it is a real time saver.. Granted, we really just boil water, yet this stove is so fast and easy, our mornings were more enjoyable as we broke camp each day. The added bonus is that it fit nicely in my back.
    Date published: 2013-09-26
    Rated5out of5byfromLook no furtherBoils fast, compact, lightweight. Not vulnerable to wind related inefficiency, or a melted heat exchanger. Great accessories. Love the handle and top. Only improvement would be a built in igniter, but definitely not a deal breaker. Design is head and shoulders above the jet boil competition. Would definitely recommend. Took it out to the high Unitas and had zero problems.
    Date published: 2013-07-31
    Rated5out of5byfromWorks with NEW MSR fuel canisterThe 1.0 liter Reactor pot works great for boiling water. It's very fast and efficient for a solo backpacker, and takes up minimal space inside a pack. I do want to address another reviewer's comments about the fuel canisters not fitting inside the pot as advertised. The older MSR 4.0-ounce fuel canisters will not fit inside the 1.0 liter Reactor pot because of the rolled edge at the bottom. MSR redesigned their smaller fuel canisters to be narrower and taller, and these newer 3.9-ounce fuel canisters will fit inside the 1.0 liter Reactor pot. I photographed the two different fuel canisters side-by-side for a comparison, and will try to include them with this review.
    Date published: 2013-04-04
    Rated5out of5byfromAweomeThe first reviewer is confusing canister sizes. The new 4oz canister works great. The larger canister will not fit due to the rolled edge. This thing rocks!! Super fast boiling water in no time. Great wind protection and super easy to light.
    Date published: 2013-03-20
    Rated2out of5byfromBurns well but Canister won't fit in potTHis stove is an inferno. IT boiled 1/2L of water in under 2.5 min at -13C. It's an awsome stove. But its advertised to fit the stove burner and the 4oz fuel canister inside the pot. But the rolled metal rim at the base of the fuel canister won't fit inside the pot! IT just sits on top like a well fitting lid. There's no way it'll go in there without doing damage. MSR, did you even try this feature out before advertising it? I'm thinking "no". But with the Jetboil canisters it works fine, so that's what I'll be using. MSR really failed though, considering it WILL NOT do something that it is specifically advertised to do.
    Date published: 2013-03-17

    Ask a question and have it answered by REI product experts and fellow outdoor enthusiasts. Need immediate assistance? Use Live Help.

    Loading Questions & Answers...

    How are we doing? Give us feedback on this page.

    FREE SHIPPING With $50 minimum purchase

    MEMBERS, EARN A $20 BONUS CARD! When you spend $100 April 14-29. Single-use bonus card redeemable May 2-12. Details
    • Join REI today!
    • REI Membership
    • REI member benefits include an annual refund (typically 10% on eligible purchases).
    • Join REI today!
    • Sign up for REI Gearmail®
    • and get 15% off selected items!
    • Store Locator
    • Locate an REI store near you.
    • Find a Store
    © 2014 Recreational Equipment, Inc. All rights reserved. REI, the REI Tree and Mountain design, Novara, and
    REI Adventures are trademarks of Recreational Equipment, Inc.

    Find REI on: FacebookTwitterYouTubeFlickrMobile site