Your Cart is Empty

The Backcountry Duffle is 100% Waterproof and designed to do it all: it’s a duffle, a backpack, and a quick stash spot for just about anything.

Add To Cart
Backcountry 40L Duffle/Pack (V2.5)

Backcountry 40L Duffle/Pack (V2.5)

Onyx/Orange - Preorder

This moto-duffle does it all: it's a duffle, a backpack, and a quick-stash spot during the day. It's a way to keep your wet jacket separate from your dry sleeping bag. It serves as a clean food prep surface next to the campfire and a convenient tool tray for roadside field repairs. Pair it with our Backcountry Cinch Straps for rock-solid attachment to your bike. The newly updated Backcountry Duffle is available in two sizes, a 40L version, and a 30L version.

(Onyx/Orange is available for preorder with expected delivery in May 2024. If you’re ordering in-stock and preorder items and need your in-stock ones right away, please place two separate orders or all items will ship with the preorder.)


Updates to Version 2.5

  • 100% recycled 1680D Ballistic Nylon and eco-friendly PVC backing (this is the main feature update and has a pretty big impact on our footprint)
  • Aesthetic, trims, and logo updates

With the Backcountry Duffle, we wanted to design a motorcycle bag from the ground up. Two things jumped out at us right away. First, we hated having to unpack the entire back of the bike just to put something in or take it out. If you picture a traditional roll-top duffle, the straps connecting it to the bike are going over the opening, meaning you have to undo the straps to get inside. Plus, because the bag sits on the back of the bike, it is too high to see inside by the time you unroll the opening, so you take it off the bike and set it on the ground. If you’re getting in and out of the bag several times a day, this can get pretty annoying.

Second, traditional single-layer dry bag duffles have a very limited lifespan. There are so many things that can cause them to fail. Campfire sparks, abrasion from a crash, abrasion from the rack it sits on, heat from the exhaust, cracks from sun damage, etc. As soon as anything happens to the bag, it’s not waterproof anymore. And if that happens in the middle of a trip it sucks.

To solve that problem, we came up with the idea of a bag that’s actually two bags – an inner waterproof bag and an outer abrasion-proof bag. We made it a double-ended roll top so you can get things in and out without unstrapping it from the bike, and added a beavertail to stash your jacket or wet/dirty items you don’t want inside the dry bag. These things can be stored externally without getting inside the duffle at all.

Then we added backpack straps. Riding 50+ miles on dirt is no big deal on an adventure bike, but if you break down and find yourself hiking out, it’s a long friggin way, man. Having a comfortable backpack is key. That was the original idea behind the backpack straps, but it turns out it’s also super handy for getting everything into a hotel room in a single trip. When you’re traveling internationally, sometimes it’s not ok to leave half your stuff on the bike while you take the other half inside. With the Backcountry duffle, put the duffle on your back, grab a pannier in each hand, and you’re mobile. The straps make it a great airline carry-on for fly-to-ride trips or general travel.

  • MOLLE expandability
  • Two bag system – tough bag outside, dry bag inside
  • Beavertail stash-spot for extra storage and expansion
  • 4L Aux Pox compatible Beavertail
  • Double ended roll top – access from BOTH sides
  • Deployable backpack straps
  • Built-in tent pole pocket
  • Document/map pocket
  • Backcountry 40L Duffle
  • 20L Drysak

There are two things that take some getting used to on this duffle: First, the materials are really thick, which means that rolling/unrolling the roll-top feels a little cumbersome at first if you’re used to thinner kayak dry bags or stuff sacks. The materials loosen up with time, have no fear. Second, compared to a top-loader, the double-ended roll-top has a narrower throat. So when you’re in your tent or in your hotel room, sorting through the stuff inside is not as easy as it would be with a top-loader. We make top-loaders too; check out our Scout 30/50 duffle if that’s the way you’re leaning.

Connection Strap Note: For pavement and graded road riding, virtually any kind of connection strap will work to attach this duffle to the bike. For rough, ungraded terrain or for long-distance, multi-month trips, we highly recommend the Backcountry Cinch Strap, designed specifically for this bag and this kind of travel. Whatever strap you choose, if you are riding offroad, please avoid bungy cords, stretchable elastic straps, or straps with plastic side-release buckles. Even a simple cam buckle strap (like this one by DaKine) is better than elastic.


The 2 Bag System

Tough bag on the outside, dry bag on the inside. The outer bag is engineered to resist punctures, abrasion, and tears. The 100% waterproof inner drybag is constructed of 22oz 840D TPU with welded seams, keeping water out and your stuff bone dry.

Stashable Backpack Straps

If you break down and find yourself hiking out, having a comfortable backpack is key. The stashable backpack straps are also super handy for getting everything up to a hotel room in a single trip.

Infinite Expandability

Hypalon MOLLE panels allow you to configure your panniers exactly the way you want them. MOLLE accessory pouches enable you to expand the capacity of your panniers for things like fuel bottles or a hydration reservoir. The expandable rear Beavertail is Aux Pox compatible and creates a convenient spot to tuck a motorcycle jacket or store wet things you don't want inside your dry bag.


1. MOLLE expandability

2. Two-bag system – Tough bag outside. Dry bag inside.

3. Beavertail stash-spot for extra storage and expansion

4. Double-ended roll top – access from BOTH sides

5. Deployable backpack straps

6. Tent pole pocket – keep those tent poles on quick draw!


  • Capacity: 40L
  • Length: 21-26 in / 53.3-66 cm (roll top ends can be extended significantly)
  • Width: 16 in / 40.6 cm
  • Height: 10 in / 25.4 cm  
  • Weight: Approx 6 lbs / 2.5 kg
  • Length of Tent Pole Pocket: 19.5 in / 50 cm
Construction & Materials
  • Outer Shell Materials: Ballistic Nylon
  • Inner Dry Bag Materials: 100% waterproof TPU with welded seam construction
  • D Rings: Aluminum rather than plastic to withstand abuse
  • Top Panel: 100% waterproof TPU for easy washing, extra water resistance, and abrasion protection
  • Beavertail: Ballistic Nylon – providing extreme abrasion resistance + a Hypalon MOLLE Panel for adding additional MOLLE accessories
  • Tent Pole Pocket: Ballistic Nylon
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 1134 reviews
Tom Vriniotis

I will admit that I have not actually used it on a trip yet, but this thing looks like it can go through a war and come back unscathed! It is extremely well made and designed. I like that you can load it from both ends and the blue color inside bag allows nice contrast to find your smaller bits. The mounting slots allow secure attachment to the bike and the alternate attachment point gives you many options a to expand on its capacity.

Overall two thumbs up!! Very happy with my purchase. You get what you pay for.

Floyd Carroll

Very functional

Joseph Dickson MA LPC NCC
Hands down the best!

I’ve been riding motorcycles since I was 6. Motocross, street, adventure, enduro… I’ve done a lot of riding. Having really gotten into ADV in the last couple years, I wanted luggage that would last and that integrated well with my 2023 KTM 890 R.

First of all, the engineering and design is top notch. When you think, “it’d be cool if the bags had ______ on them or could _______.” It’s probably already there. Mosko GENUINELY engineers and designs their products from a rider’s mindset. It shows in every stitch, buckle (which they include extras of these… won’t get that with others), felt loop, and fastener. That’s not hyperbole.

If you want lots of room, the ability to expand and use molle attachments, top quality materials, design, and engineering…. Look around all you want but unless you’re just dying to have hard-side MC luggage, you’ll find yourself weeding out the others and eventually getting back to Mosko. Will you pay a bit more? Sure. Do you 100% get what you pay for? Damn straight you do… and more.

Oh, and I’m not saying any of this for any other reason than that I genuinely believe Mosko’s luggage is absolutely top shelf. If you doubt that, just buy the cheapest tank bag they have. If you can’t see and feel the strength of the materials, the engineering and the design that went into the bag, you probably don’t deserve one. Kidding.

Steve Bracken
More than you could ask for

This bag is huge and perfect for taking wider than typical gear. I throw in my tensa stand in it and my Coleman tent, knowing it'll be safe and dry. The quality is top notch and I love the hidden compartment. Also really like that a dry bag for dirty clothes was included. There's passion from this company and I love that they sell directly to customers.

Jason Z
Everything I was hoping for

Worth every penny. Buy once, cry once.