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Our strongest and most durable side bag.
Constructed from a robust Hypalon rubber laminate, the Ultra Durable (UD) is designed for those adventures where you need absolute faith in your equipment.
The UD features a rigid, internal backbone that holds your belongings secure, keeping your ride smooth when the road is rough – or when there is no road at all.
Featuring high frequency welded seams and a roll-top design, the UD offers total protection from the elements, however extreme the conditions.
Keep your valuable items safe in all weathers with the UD’s essentials pocket.
Featuring a full 22 litres of storage space, the UD is the ultimate go-anywhere, do-anything pannier bag – ready to hit the road in pursuit of adventure.
The UD features an aluminium cam-action clamp that totally eliminates any annoying rattle, allowing you to focus on what’s important: having a great ride.
Watch the deep dive video and get hands on with why these are the best pannier bags on the planet.
Constructed from a durable Hypalon rubber laminate for all-weather protection, the UD is designed for the rigours of the urban commute.
Whether it’s your daily commute or a weekend adventure, the UD’s rear light mounts and reflective strips help you stay visible.
22l Super Light
22l Ultra Durable
22 litres / 1350 cu. inches
Road / Gravel
High Frequency Welded
Ripstop Nylon & Hypalon
600 x 315 x 160mm / 23.6 x 12.5 x 6.3″
Over center alloy clamp
*These weights do not include the removable internal pocket (80g)
The bag is great. Light weight but sturdy, and doesn’t move around on the rack at all
I have been using the Tailfin product for 1 month for bikepacking in Cambodia where I live. The product is easy to install, great to ride with. You simply forget it is on your bike after few km, I really like it.
However, after my first ride, the 4 rubber pads that protect the carbon arms and help to hold the side bags, fell of. Extremly disapointing for such a pricy product. I had to put some pieces of inner tube with tape to replace them. quite a shame to have to do DIY work to maintain the functionality after the first few hours of ride.
I was looking for a pannier rack that didn't need eyelets in the frame and thought I was doomed to have an unreliable wobbly set up. Not so. The Tailfin idea of using a thru axel and super stable seat clamp is genius and so far it seems pretty bombproof. I bought a carbon rack and ultra dura pannier set and have been using them for several weeks between several bikes now. You have to finish assembling the bags and rack yourself and I have to say that if you don't enjoy putting flat pack furniture together you're probably not going to enjoy the process, there were so many spare screws left at the end I wasn't sure I'd done it right, but it was worth it for the finished product. I've been on road using it with my commuter bike and then bouncing round off-road on longer self-sufficient rides on a mountain bike, they're right it doesn't rattle (unless you pack your bag badly). The bags are kept back and high out the way of your feet during the pedal stroke. They are super easy to get on and off and so far seem very waterproof. The rack is also easy to take on and off, for example, to clean your bike or to swap it to another bike. This is such a great product and could be useful whatever type of gear lugging cyclist you are.