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The AeroPack S is our all-in-one integrated rigid seatpack, with minimum weight and maximum aerodynamic advantages.
S THREE Trunk Racks are due back in stock June 5th – join our mailing list for stock notifications.
What are the differences?
The models differ by material and weight:
AeroPack Alloy X = Alloy Arch
AeroPack Carbon X = Carbon Arch
AeroPack Alloy S = Alloy Arch
AeroPack Carbon S = Carbon Arch
What are my mounting options?
Axle + Fast-Release Dropouts: We ship you a Tailfin Axle to swap out for your own, our Fast-Release Dropouts allow you to mount/dismount the rack from your bike in seconds.
Frame Mounts + Fast-Release Dropouts: We ship you Frame Mount Adaptors which attach to your bike’s frame mounts, our Fast-Release Dropouts allow you to mount/dismount the rack from your bike in seconds.
Frame Mounting: You screw the rack directly onto your frame mounts, without a fast-releasing mechanism.
Which Axle do I need?
If you need help figuring out which axle type to use, please use our guide posted here as a reference.
Most Bikes Use a Quick-release Axle (Pictured above-right)
Use the guide below ONLY if your bike uses a Thru-Axle. If you’re unsure – see above.
Thru Axle 12x142mm 1.0mm Pitch
*for Open frames you will need an axle cap also, found HERE
Thru Axle 12x142mm 1.0mm Pitch – Speed Release (this is a double lead axle)
Thru Axle 12x142mm 1.5mm Pitch
Thru Axle 12x142mm 1.75mm Pitch
RAT Systems (RAT Thru Axle 12x142mm), you will need to order a 1.5mm thru axle, along with this adaptor part.
Thru Axle 12mm 1.0mm Pitch
Thru Axle 12mm 1.5mm Pitch
Thru Axle 12mm 1.75mm Pitch
This is it: the ultimate minimalist rigid seat pack system. Aimed at the performance cyclist who wants to go fast either on or off-road, it is an integrated top bag with no side pannier mounts.
Seat packs are great. The AeroPack is awesome. We take everything that you love about seat packs and pannier bags and combine them to create the ultimate way to carry your gear.
Don’t let your gear slow you down. The AeroPack is designed for aero advantage, and the stiff, rigid frame keeps your ride smooth and free from tailwag.
Watch the deep dive video and get hands on with each and every component. See the modularity, hear the satisfying clicks as components move together and get a feel for the overall size.
The rigid parabolic carbon arch connects solidly to the AeroPack bag with 6061-T6 aluminium pivot system.
The pinnacle of ultra distance racing is the Transcontinental Race. Used in both TCRNo6 and TCRNo7, the AeroPack has seen some serious miles and excelled in arduous real-world testing.
The seatpost connector is kind to carbon and designed to wrap around any size seatpost from 25mm through to a 3″ deep aero. So no matter what bike you ride, you can securely attach and quickly release the AeroPack.
With the AeroPack light mount it enables you to fit any seatpost light to the back of the AeroPack for maximum visibility.
The AeroPack makes it easy to access your gear on the bike thanks to a roll-top opening and direct access pocket.
The Tailfin Axle Mount System means you can fit and remove the AeroPack in seconds.
The wide mouth, top opening design means you spend less time packing your gear. The time you spend moving is as important as the time you spend stopped.
The AeroPack X rack will fit nearly all tyre sizes:
26″ – Up to 4″/100mm
27.5″ – Up to 3.5″/85mm
29″ – Up to 3″ /75mm
The AeroPack is rigid and light, meaning no tailwag and a smooth, stable ride. It’s almost like you weren’t carrying any gear at all.
Replace your axle with a Tailfin axle to mount the Tailfin rack. Most bicycles use a quick-release axle, however, we also support the new Thru Axle standards (e.g. 12×142, 12×148, E-Thru, Syntace X-12, etc)
One of the challenges with any roll top bag is the speed with which you can enter the main body of the bag. The direct access pocket allows you to get in to the main body of the bag without opening the roll top.
High performance laminate and high frequency welded seams make the AeroPack completely waterproof.
It’s now possible to attach our racks directly to frames with eyelets. The quick-release rack dropouts are modular so you can choose to use them, or not.
A zipped pocket keep a few essentials handy.
The Frame Mount Adaptor set allows you to mount directly to your frame mounts but still keep the Fast Release Dropouts for easy on and off rack mounting.
The AeroPack seat post connector gives a little more breathing room behind the seatpost. Great for those with smaller frames.
AeroPack Carbon S
AeroPack Alloy S
4″ / 100mm
3.5″ / 90mm
3″ / 75mm
Axle or Frame
Any seatpost – inc. Aero
Around 30 seconds
Anti-theft screws included
*These weights do not include the removable stacking straps (50g) or the removable bag backbone cover (40g)
“Beautifully made, fully waterproof, mounts in seconds, more capacity than a seatpack, AERO… it’s a lovely thing that’s a joy to use.”
“It strikes a sweet spot between weight, space, and usability…the Aeropack’s execution is so much better than anything I’ve ever seen.”
I used a prototype of Tailfin 4 years ago for a 2500 mile bike race across Route 66. It was great then, it is even better now. The Aeropack is a superior piece of kit to anything else I have used. Quick to install, easy to access, solid as a rock.
I commute 4-5 days a week around 40-50 mins and for the last few months have suffered from lower back pain which was aggravated by the weight in my rucksack. I needed to get the weight off me and onto my bike.
I don't get on with under saddle bags as my legs tend to rub and I end up with holes in my shorts! Plus I don't like the way they can swing about. I was directed to Tailfin by a friend and had also seen reviews by others on Youtube.
I went for the Aero Pack S as I liked the simplicity of the design. When it arrived I couldn't believe how light it was - the X version must float! Took me around 10 minutes to get it set up once I'd changed around spacers for my frame but now I can take it on and off in around 30 seconds. Everything is so well made and thought out - proper thought has been put into the design and craftsmanship.
On my first ride I pretty much forgot I had it on the bike. No legs hitting the bag and more importantly, no back pain afterwards! The bag is super tough and totally waterproof. This was tested on its second day when I got caught in torrential rain - all my clothes stayed 100% dry. It also kept some of the road spray off my backside too!
I had no hesitation in ordering the thru axle for my winter bike which arrived very quickly. It takes a bit of trial and error with the supplied spacers to ensure the carrier is clear of the rear derailleur, but you only have to do it once!
Whilst it is certainly not the cheapest solution on the market it really is worth the extra money. Once you've nailed the packing it really is a fit and forget job. Thoroughly recommended!
The AeroPack S is very light and very easy to install and remove. I love using this when my commute calls for a large pack.