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Inspired by the hydration packs we use for backcountry skiing and mountain biking, the Nomax comes with a 2L hydration reservoir and tons of storage for all those little things you want to organize and access quickly.

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Nomax Tank Bag (V3.0)

Nomax Tank Bag (V3.0)


Our Nomax Tank Bag gets major design updates for V3.0, including an additional expansion zipper, adding 2.5 liters of optional volume, upgraded backpack straps, an InReach pocket, and a lighter weight, recycled 630D material.

Inspired by the hydration packs we use for backcountry skiing and mountain biking, the Nomax comes with a 2L hydration reservoir, a stashable rain cover, and tons of storage for all those little things you want to organize and access quickly. To top it off, the bag unclips from the bike quickly and transforms into a fully functional backpack for off-bike missions.

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Updates to Version 3.0

  • Expansion zipper – adding 2.5 liters of optional volume
  • Lighter weight, recycled 630D material
  • Upgraded backpack straps
  • InReach pocket

After talking to hundreds of riders around the world, and combining their feedback with our personal wants and needs, we decided to design the Nomax's storage space differently than the traditional 'toaster' shape. Instead, we divided the space into six vertical layers, each with a specific purpose. We conducted research on the types of items that riders typically store in their tank bags and discovered that most of them were small. By using a vertical layout, we were able to maximize the use of space without increasing the height of the bag.

The top layer of the Nomax has three columns of MOLLE webbing made from die-cut Hypalon. These columns can be used to mount various items such as our rain-proof MOLLE Map Pocket, Navigator Cell Phone Pocket, or MOLLE-compatible multi-tool. You can customize the top layer of the Nomax to suit your individual travel needs with the help of MOLLE webbing.

Beneath the MOLLE webbing, the next layer is an expandable beavertail. The beavertail can be used to quickly store things like sunglasses, gloves, snacks, or even a small DSLR camera. If you decide to use it for your DSLR, we've placed webbing loops on the beavertail side bellows, allowing you to directly clip the D-rings on your camera case to the bag. Inside the beavertail, we've also included a pocket for an InReach or SPOT, and a gated clip to keep your GPS/camera/beacon lanyards secure, so nothing falls out if your bike takes a tumble.

The third layer zips back into your lap and is specifically designed to help you organize small items like charging cables, pens, change, batteries, earplugs, chapstick, passport, and bike documents. This layer includes six mesh pockets, three elastic cable holders, two pen holders, and a fleece-lined glasses pocket to keep everything in its place. No more tangled mess of miscellaneous items floating around in the bottom of your tank bag - now everything has a designated home.

The fourth layer is a large open compartment featuring plenty of space for bulkier items like spare gloves, wallet, CCW, and food. There are two large mesh pockets (one with sidewalls and one flat), which are available if you need them but compress out of the way if you don't. Also, for contact lens wearers, on the foam-reinforced sidewall, there's a removable lens case holder, which can be rotated to keep the cases vertical depending on the orientation of the bag.

Under the main compartment, is a long, flat pocket designed to hold a 2.5L hydration reservoir, which comes included with the Nomax. If you're traveling in a warmer climate or on a long-distance trip, you can move the weight of your drinking water from your back to the bike to help you stay hydrated without adding extra weight to your backpack. If you'd rather keep the Nomax as tight as possible to the bike or maximize space in the main compartment, you can remove the reservoir and store it elsewhere on the bike.

The sixth and final layer of the Nomax houses a quick-stash spot for two sewn-on, crushable backpack straps. Simply unclip the Nomax from the bike, pull out the backpack straps, and clip them to the D-rings at the bottom of the bag. The Nomax converts into a fully functioning hydration pack. The side straps, which normally connect the Nomax to the bike, now become your waist strap. We use these backpack straps on dual sport trips all the time, from morning hikes to running errands in town. It looks, feels, and functions like a normal backpack.

The Nomax includes a waterproof rain cover, with a welded-seam top panel and sealed seams on the side to keep your belongings dry in a heavy downpour. There's a stash spot for the rain cover on the top of the bag and a leash so it doesn't get lost. Also, hidden away in two of the zipper pulls, you’ll find a SIM card tool, a storage compartment, and a safety whistle for emergencies.

  • 2.0L Hydration reservoir w/ insulated hose
  • Beavertail stash spot
  • Easy on/off with the standard Mosko tank bag harness
  • 6 layers of vertical organization (features hidden inside!)
  • MOLLE expandability
  • External beacon pocket (inReach or Spot)
  • HHMS (hydration hose mgmt. system)
  • Fleece lined sunglasses pocket
  • Cable pass-through port (charging!)
  • D-rings for connecting backpack straps
  • Nomax Tank Bag
  • 2.0L Hydrapak reservoir
  • Easy on/off mounting harness
  • Two lower connection straps for mounting
  • Stashable, rain-proof cover
  • Four heavy-duty cable ties with metal closure for mounting
  • The Nomax expands & contracts as needed. If you prefer a tight-fitting tank bag with a low profile, remove the hydration reservoir and map pocket and cinch it down tight to the bike.
  • For more capacity, take full advantage of the beavertail.


  • View Installation Instructions PDF
  • View Nomax Footprint PDF
  • Due to the Nomax's long torso, it may not fit on smaller dual sport bikes.
  • We recommend rigging the Nomax as far forward as possible – it's not uncommon for the top of the bag to extend over the handlebars on some bikes.
  • Our universal mounting harness makes it easy to swap between other Mosko tank bags and is also interchangeable between bikes.


  1. 2.0L Hydration reservoir w/ insulated hose
  2. Beavertail stash spot
  3. Quick-release mounting system
  4. Fleece-lined sunglasses pocket
  5. MOLLE expandability
  6. External beacon pocket (inReach or Spot)
  7. HHMS (hydration hose mgmt. system)
  8. 6 layers of vertical organization (features hidden inside!)
  9. Cable pass-through port (charging!)
  10. D-rings for connecting backpack straps


  • Capacity: 7L (not including the expandable Beavertail pocket)
  • Length: 15 in / 38 cm
  • Width: 8.5 in / 21.5 cm
  • Height: 5.5 in / 14 cm
  • Weight: 3.3 lbs / 1.5 kg
Construction & Materials
  • Main Body Materials: 630D High Density 100% Recycled Nylon
  • Beavertail MOLLE Panel: Hypalon
  • Rain Cover: Nylon w/ clear PVC welded seam top panel and sealed side seams
  • Optional Map Pocket or Navigator Cell Phone Pocket
  • Internal stiffener to help the bag keep its shape
Product Care

Visit our Help Center for Product Care info.


We never cut corners during development or manufacturing, so we stand behind our products. If one fails due to a problem with materials or workmanship, we’ll make it right. All Mosko Moto products include:

Limited Lifetime Warranty

'Limited' means it does not cover:

  • wear & tear
  • neglect/misuse/abuse
  • aesthetics
  • sun degradation
  • modification and/or use for a purpose other than what the item was designed for

Crash Care Program

Pair With

Customer Reviews

Based on 2095 reviews
Nomex FTW

Fantastic tank bag, tons of organized storage, water bladder is the main reason I bought it and it works great.
Fitment was a little finicky on my 890r mainly because of my aftermarket fuel cap. It fits right up against the bars(no issues with turning/rubbing) and slightly over the front of the seat. You feel it a bit while standing but it doesn't bother me. Plan on buying the second bike strap kit to move it over to my GS when I want

Great tank bag

Mosko Moto has the best ADV accessories and gears


Easy to load up, great construction, comfortable shoulder straps to carry around ,matches my bike going for the Reckless 80 next 😀

Sierra Drewry

Nomax Tank Bag (V3.0)

Anna Thompson
I wish I had bought it earlier!

My husband has one and I just did the WABDR with it.
In 100 degree temps the water bladder was essential.
Allowed me to keep lots of gear handy.
Didn’t come off the bike even with 8 crashes (new rider).
There was a couple bonuses waiting to buy, actually.
1. Extra collapsible space wasn’t available before
2. KTM orange!