Banjo Brothers X-Large Waterproof Saddle Trunk
Best rack-free storage for bikepackers and commuters needing massive capacity.
Looking to get into bikepacking or just need a huge storage solution for your commute without the hassle of a rack? The Banjo Brothers X-Large Waterproof Saddle Trunk is here to help! This massive seat-mounted pack offers a usable capacity that can shrink from 800 cubic inches (13L) down to 350 cubic inches when you don't need the full space. It features a rigid hull inside the front for excellent support, even when it's not completely full, and includes a removable waterproof liner to keep your gear dry. Just make sure you have at least 8 inches of clearance between your saddle rails and your fender to fit this beauty!
$64.99
Owner Satisfaction
4.6
/ 5
Category Rank
340
/ 1794
#340 in Bicycle Bags & Panniers
Price vs Category Average
-26%
Below average
Weight
2
/ lbs
Who it's for
- Commuters and tourers needing maximum cargo space for daily hauls
- All-weather riders requiring bone-dry protection for sensitive gear
- Daily commuters seeking a bag built to survive years of abuse
Who should skip it
- Weight-conscious cyclists prioritizing a lightweight bike setup
- Minimalists preferring sleek, collapsible bags over bulky industrial designs
- Cyclists without a rear rack who want a simple, standalone solution
Performance breakdown
Storage Capacity
Massive volume easily swallows gear for extended bikepacking trips.
Weather Protection
Removable liner keeps contents bone-dry during heavy downpours.
Structural Stability
Rigid hull prevents annoying sway even when partially loaded.
Rack-Free Convenience
Eliminates the need for heavy racks, simplifying your bike setup.
Fit Compatibility
Requires significant saddle clearance, limiting use on smaller frames.
Compression Versatility
Adjusts seamlessly from massive hauler to compact daily commuter bag.
Key Specs
Weight
2 lbs
Dimensions
22.0"L x 7.0" H x 6.25" W
Capacity
800 cubic inches / 13L (expandable/compressible)
Removable waterproof liner
Requires a gap between saddle rails and tire of at least 8"
Know before you buy
No, this bag is designed to mount directly to your saddle rails, eliminating the need for a rear rack. It is an excellent solution if you want to carry significant gear without adding extra hardware to your bike frame.
You need at least 8 inches of clearance between your saddle rails and your rear tire or fender. It is important to measure this space before purchasing to ensure the bag does not rub against your wheel.
Yes, the bag is highly adjustable. It offers a usable capacity ranging from 800 cubic inches (13L) down to 350 cubic inches, allowing you to compress the bag when you are carrying lighter loads.
The bag features a rigid hull inside the front section. This internal structure provides necessary support and helps the bag hold its shape, preventing it from sagging or swaying even when it is not packed to capacity.
Yes, it includes a removable waterproof liner designed to keep your gear dry in wet conditions. Because the liner is removable, it is also easy to clean or dry out if needed.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$65