Nitro Stout Carbon Fat Bike NX

Regular price $2,750.00 Save $-2,750.00

Only -36 items in stock!


Growler Nitro Stout Carbon Fiber Fat Bike is one of the lightest and most capable fat bikes in the world. With available hand built carbon rims and top components from SRAM, Sunringle, Terrene, Lizard Skins, Manitou, FSA, the Growler Nitro Stout is nothing less than a race worthy dirt machine.

Winning Races is not all it is capable of.  With the ability to be multiple bikes using the Growler Modular Bike Building System, the Growler Nitro Stout can transform from a Race Worthy Fatty to a Race Worthy 27.5+ or 29+ trail slayer. Utilizing interchangeable wheelsets and two position dropouts the Growler Nitro Stout can have a shorter chainstay that increases agility and improves responsiveness, making attacking all four season as simple as swapping your wheelsets.  


    **Due to limited product availability, standard components are subject to change without notice, though you will be notified before the bike ships.**

    • Frame: Growler Nitro Stout
    • Fork:  Growler Carbon Fat Bike Fork
    • Headset: FSA Orbit integrated 1.125 - 1.5in 
    • Stem: FSA alloy with 31.8 Clamp 
    • Handlebar: FSA 750mm UD Carbon Fiber 1/2” rise/31.8 
    • Brakes: SRAM 4 Piston Brakes  
    • Rear derailleur: SRAM NX Eagle 1x12, long cage 
    • Shift levers: SRAM NX trigger shifters
    • Cassette: SRAM, PG 1230 12-speed, 11-50t 
    • Chain: SRAM NX Eagle 12 speed chain 
    • Crankset: SRAM NX Eagle Dub, 30T Chainring
    • Rims: Sunringle Mulefut SL80 Tubeless installed  
    • Front Hub: Sunringle SRC 15x150mm hub
    • Rear Hub: Sunringle SRC 12x197mm hub 
    • Tires:  Maxxis Minion FBF/FBR 3.8" tubeless, folding bead
    • Saddle: WTB Volt Comp saddle 
    • Grips: Lizard Skin Logo Grips 
    • Seatpost: FSA SL-K Carbon

    Growler Nitro Stout Geometry

    Frame Size S M L XL
    Wheel Size 27.5" 27.5" 27.5" 27.5"
    Seat tube 16" 18" 20" 22"
    Seat Tube angle 73˚ 73˚ 73˚ 73
    head tube length 100 110 130 150
    Head angle 68˚ 68 68˚ 68
    Effective Top Tube 580 605 625 645
    Bottom Bracket Height 337 337 337 337
    Bottom Bracket Drop 58 58 58 58
    Chainstay Length 465 465 465 465
    Offset 51 51 51 51
    Wheelbase 1126 1146 1168 1194
    Frame reach 402 419 433 450
    Frame Stack 589 598 617 636

    Customer Reviews

    Based on 7 reviews
    Fast bike

    Entered my Nitro Stout in my first bike race. It’s a fast bike. It was very easy to roll past the competition on their fat bikes.

    Best bikes and service ever.

    I bought 4 nitro stouts for my family knowing skiing would be canceled. Sure enough, we couldn’t ski, or even travel to vt at all. The bikes were delivered and we have been having fantastic family fun outdoors on our new 4 season fat bikes. Wheels helped me from first call past delivery. He was in full contact with me and I never felt uncomfortable at all... Even dropping a significant amount of cash sight unseen. I had a minor tire issue... Wheels and Ben went above and beyond and had tire swapped by local shop. I am 100% satisfied. My only suggestion... and trust me we spoke about it... Growler needs to make a 24” bike for younger shredders. Thanks Growler!!!! -Matt bear Boston.


    This bike is everything I could have hoped for in a bike. It’s amazing and would recommend anyone and everyone to get one!!

    Could Not Be Happier!!

    I've owned my Growler Nitro Stout Fat Bike for about two weeks now. This bike is incredible! I have the XL frame; in my configuration, the bike tips the scales at 29lbs, which is significantly lighter than the other four mountain bikes in my garage.
    The best part of this experience was undoubtedly the support I received from the team at Growler. The owner of the company communicated with me directly to answer all of my questions and concerns, and responded immediately. Once the bike builder took over, he reached out to me of his own accord to make sure he understood what I was looking for and to offer some advice and suggestions.
    Regardless of your bike choice, I highly recommend you choose Growler for their product and their service.

    Growler is a beast

    I absolutely love my Growler Nitro Stout. Its super light, but more than capable on any terrain-snow or not. Flows great on any terrain, and is super fun to ride. On top of that, the whole crew I interacted with at the shop was super awesome and went above and beyond to help me get my bike before the snows came. Thanks all!