BCA Stash 40 UL Backpack | Ultralight Backcountry Ski & Splitboard Pack
The BCA Stash 40 UL Backpack is built for big days in the mountains when you need serious gear capacity without carrying unnecessary weight. Designed for backcountry ski touring, splitboarding, ski mountaineering, and extended alpine adventures, the Stash 40 UL combines a lightweight construction with practical storage, avalanche safety equipment organization, and versatile ski and snowboard carry options.
With a 40-litre capacity expandable to 42 litres, a supportive internal frame, and a lightweight design weighing approximately 1,186 g / 2.61 lb, the Stash 40 UL provides the room needed for technical equipment, extra layers, food, and mountain essentials without the bulk of a traditional expedition pack.
Ultralight Construction Without Sacrificing Function
The Stash 40 UL is designed for backcountry travellers who want to reduce pack weight without giving up the features that matter in the mountains.
Its streamlined design combines lightweight materials, an internal support frame, and adjustable compression straps to keep the load stable during long approaches, technical climbs, and descents.
At approximately 1,186 grams, it offers a practical balance between low weight, load support, and everyday backcountry functionality.
40 L Capacity with Expandable Roll-Top
The Stash 40 UL offers 40 litres of storage, with an expandable roll-top closure that increases maximum capacity to approximately 42 litres.
The roll-top design makes it easy to adjust pack volume depending on the day's objectives. Cinch it down for lighter touring days or extend it when additional clothing, climbing equipment, or overnight essentials are required.
The larger capacity makes the Stash 40 UL particularly well suited to:
- Long backcountry ski touring days
- Splitboard touring
- Ski mountaineering objectives
- Alpine approaches
- Guided backcountry trips
- Lightweight overnight adventures
Dedicated Avalanche Safety Equipment Compartment
A dedicated shovel and probe compartment keeps essential avalanche rescue tools separate from the main storage area.
Organizing rescue equipment in its own compartment makes it easier to locate and retrieve when needed, while preventing wet or snow-covered tools from mixing with spare clothing and other equipment.
For backcountry skiing and splitboarding, keeping rescue tools organized and readily accessible should be a priority on every tour.
Side Access Zipper
The Stash 40 UL features a side access zipper that provides convenient access to the main compartment without having to unpack everything through the roll-top opening.
This is especially useful when retrieving extra layers, gloves, food, or other equipment buried deeper in the pack.
It is a simple feature that becomes considerably more appreciated when the weather is unpleasant and your spare gloves are somewhere near the bottom.
Quick-Access Side Stash Pocket
BCA's Side Stash pocket provides additional storage for items you want to keep accessible throughout the day.
It is useful for frequently accessed equipment, helping reduce the number of times you need to open the main compartment during a tour.
A-Frame & Diagonal Ski Carry
The Stash 40 UL supports both A-frame and diagonal ski carry configurations, allowing skiers to adapt their equipment setup to the terrain.
A-frame carry provides a balanced option for longer bootpacks and technical approaches, while diagonal carry offers a convenient alternative for shorter transitions and terrain where skis need to be secured quickly.
Vertical Snowboard Carry
For splitboarders and snowboarders, the Stash 40 UL includes a vertical snowboard carry system.
This allows a snowboard or assembled splitboard to be secured to the pack during bootpacks, steep approaches, and terrain where riding equipment needs to be carried rather than worn.
Ice Axe & Technical Equipment Carry
External ice axe attachment loops provide dedicated mounting points for technical alpine equipment.
Combined with the pack's multiple attachment points and compression straps, the Stash 40 UL can be configured for more demanding ski mountaineering and alpine objectives.
Removable Helmet Carry
A removable helmet carry system provides external helmet storage when climbing or touring uphill.
Keeping a helmet outside the main compartment frees up valuable room for clothing and other equipment, while the removable design allows the pack to remain streamlined when the attachment is not required.
Internal Support Frame
The Stash 40 UL incorporates an internal support frame and wire frame structure to improve load distribution and stability.
This is particularly important in a 40-litre pack, where the combined weight of avalanche equipment, extra layers, food, water, and technical gear can add up quickly.
The supportive construction helps the pack carry more comfortably while maintaining a lightweight overall design.
BC Link Radio Compatibility
The Stash 40 UL is designed to integrate with BCA BC Link radios, making it a practical choice for backcountry groups that rely on radio communication.
Compatible radio routing and storage help keep communication equipment accessible without unnecessary dangling cables or awkward attachment arrangements.
BC Link radio equipment is sold separately.
Hydration Compatible
The pack supports hydration systems, allowing users to carry a compatible reservoir for longer tours.
A hydration reservoir is sold separately. In freezing temperatures, take appropriate precautions to prevent water and drinking tubes from freezing.
Hip Belt Pockets & Gear Loop
Two hip belt pockets provide convenient storage for smaller essentials such as snacks, lip balm, sunscreen, or other frequently used items.
A hip belt tool loop provides an additional attachment option for compatible equipment.
Keeping smaller items accessible reduces unnecessary stops and makes it easier to maintain a consistent pace during longer approaches.
Modular, Replaceable Straps
The Stash 40 UL uses modular, removable, and replaceable straps to provide flexibility in how equipment is secured to the pack.
This design allows users to adjust their carrying configuration for different objectives while making it easier to replace straps if they become worn or damaged.
Recycled Polyester Construction
The current Stash 40 UL uses a combination of 400D and 200D recycled polyester fabrics, with a 100D Robic nylon lining.
This construction balances weight reduction with the durability required for regular backcountry use.
YKK zippers with a durable water-repellent coating add weather resistance to frequently accessed openings.
Key Features & Specifications
- Model: BCA Stash 40 UL Backpack
- Brand: Backcountry Access
- Category: Ultralight Backcountry Ski & Splitboard Backpack
- Capacity: 40 L
- Maximum Expanded Capacity: 42 L
- Weight: 1,186 g / 2.61 lb
- Fit: One Size
- Torso Length: 15" to 21" / 38 to 53 cm
- Main Material: 400D and 200D recycled polyester
- Lining: 100D Robic nylon
- Zippers: YKK with DWR coating
- Main Closure: Expandable roll-top
- Main Compartment Access: Roll-top and side zipper
- Avalanche Tool Storage: Dedicated shovel and probe compartment
- Additional Storage: Side Stash pocket and two hip belt pockets
- Ski Carry: A-frame and diagonal
- Snowboard Carry: Vertical
- Helmet Carry: Removable
- Ice Axe Carry: External attachment loops
- Frame: Internal support frame with wire frame
- Compression: Adjustable compression straps
- Straps: Modular, removable, and replaceable
- Radio Compatibility: BCA BC Link
- Hydration Compatible: Yes
- Airbag System: No
- Warranty: Limited 3-year warranty
BCA Stash 40 UL vs Stash 30 UL
The biggest difference between the Stash 40 UL and Stash 30 UL is carrying capacity.
The Stash 30 UL is better suited to shorter tours, faster-moving objectives, and paddlers who prefer a more compact pack for everyday backcountry skiing or splitboarding.
The Stash 40 UL provides additional space for insulating layers, technical equipment, food, and other gear required for longer or more demanding mountain objectives.
Both share a lightweight design philosophy, avalanche tool organization, and versatile equipment-carry options.
AQ Outdoors' recommendation: choose the 30 UL if you pack light and primarily head out for shorter tours. Choose the 40 UL if your days regularly involve extra layers, climbing equipment, or the kind of gear list that makes a 30-litre pack feel optimistic.
Who Should Choose the BCA Stash 40 UL?
- Backcountry skiers planning longer tours
- Splitboarders who need extra equipment capacity
- Ski mountaineers carrying technical equipment
- Backcountry guides and experienced mountain travellers
- Skiers looking for a lightweight pack with a supportive frame
- Anyone needing 40 L of storage without a heavy expedition-style pack
- Mountain travellers who want versatile ski, snowboard, and helmet carry options
Why We Like the Stash 40 UL at AQ Outdoors
A 40-litre touring pack needs to do more than just hold a lot of stuff. It needs to carry comfortably, keep avalanche rescue equipment organized, and make gear transitions efficient when conditions are less than ideal.
The Stash 40 UL gets that balance right with a lightweight construction, supportive frame, dedicated avalanche tool storage, roll-top expansion, and versatile ski and snowboard carry systems.
We particularly like the combination of the side access zipper and Side Stash pocket. Both make it easier to reach gear without unpacking half your bag every time the weather changes.
For long days in the Canadian Rockies or interior BC, the Stash 40 UL provides useful extra capacity without turning your pack into a small moving company.
Available Through AQ Outdoors Calgary & Edmonton
Shop the BCA Stash 40 UL Backpack through AQ Outdoors in Calgary and Edmonton. Our team can help compare the Stash 40 UL with smaller touring packs, avalanche airbag packs, and other backcountry equipment to find the right setup for your ski touring and splitboarding adventures.
BCA Stash 40 UL Backpack Frequently Asked Questions
How much does the BCA Stash 40 UL weigh?
The current BCA Stash 40 UL weighs approximately 1,186 g / 2.61 lb, making it a lightweight option for a fully featured 40-litre backcountry touring pack.
What is the capacity of the Stash 40 UL?
The pack has a standard capacity of 40 litres, expandable to approximately 42 litres using the roll-top closure.
Is the BCA Stash 40 UL good for splitboarding?
Yes. The Stash 40 UL includes vertical snowboard carry, avalanche equipment storage, helmet carry, and multiple attachment points, making it suitable for splitboard touring and technical approaches.
Can the Stash 40 UL carry skis?
Yes. It supports both A-frame and diagonal ski carry configurations for bootpacks, alpine approaches, and ski mountaineering.
Does the Stash 40 UL have a dedicated avalanche tool pocket?
Yes. A dedicated compartment keeps your avalanche shovel and probe organized and separate from the main storage area.
Does the Stash 40 UL have a roll-top closure?
Yes. The roll-top closure allows the pack to expand from 40 L to a maximum of approximately 42 L and compress down when carrying less equipment.
Can I access the main compartment without opening the roll-top?
Yes. The Stash 40 UL includes a side access zipper for easier access to equipment inside the main compartment.
Does the BCA Stash 40 UL have an internal frame?
Yes. It uses an internal support frame with a wire frame structure to help distribute weight and improve carrying stability.
Is the Stash 40 UL compatible with BCA BC Link radios?
Yes. The pack is designed for BCA BC Link radio compatibility. The radio is sold separately.
Is the Stash 40 UL hydration compatible?
Yes. The pack supports compatible hydration reservoirs, which are sold separately. Additional care is required to prevent hydration equipment from freezing in cold conditions.
Does the Stash 40 UL include a helmet carry?
Yes. It includes a removable helmet carry system for securing a helmet externally when not being worn.
Is the Stash 40 UL an avalanche airbag backpack?
No. The Stash 40 UL is a non-airbag backcountry backpack. It provides dedicated avalanche safety equipment storage but does not contain an avalanche airbag system.
What is the difference between the Stash 30 UL and Stash 40 UL?
The main difference is capacity. The 30 UL is more compact for shorter tours and lighter gear loads, while the 40 UL provides additional space for longer trips, extra layers, and technical equipment.
What torso length does the Stash 40 UL fit?
The current one-size Stash 40 UL is designed for torso lengths of approximately 15" to 21" / 38 to 53 cm.
What warranty does the BCA Stash 40 UL have?
The Stash 40 UL is covered by a limited 3-year manufacturer warranty.
Where can I buy the BCA Stash 40 UL in Canada?
Shop the BCA Stash 40 UL Backpack through AQ Outdoors in Calgary and Edmonton. Our team can help compare touring backpacks and select compatible avalanche safety equipment.