Estimated reading time: 9 minutes
Introduction to the AeroPack
What is the Tailfin AeroPack?
Like a seat pack, only better? The truth is, seat packs suit plenty of people for a variety of reasons, but for us there were always limitations to strapping a bag to your seatpost with velcro. So, we looked at what was out there and smoothed out the inherent and reported issues: swaying on the bike, access to your gear, mounting, abrasion issues, and more, to create a solid, stable, and light accessory.
The AeroPack is a waterproof bag with a rigid base, connected to the seatpost with a clamp and stabilised by connection to the axle or rack mounts of your bike with a rigid Arch. It is available as a Standard 18L pack, or as a Cargo version, with 1.5 mesh-pockets on either side.
Video Complete Guides
AeroPack vs a traditional Seat Pack
Where the AeroPack differs from a standard seat pack is in how it mounts to the bike: a custom-made quick-release skewer or Thru Axle with mounting points form a stable tripod for the AeroPack between the ends of the axle and the seat post. It is this unique set-up that gives the AeroPack its incredible ride performance and a stable platform to support the top-opening bag.
Whilst traditional seat packs offer advantages in weight, they fall short in almost all other areas. The core benefits are as below:
- The AeroPack will not rattle or sway behind you – creating a stable, forget-its-there, ride
- A top-opening bag ensures easy and fast access to your belongings
- Engineered connections won’t damage or rub your frame or seat post (even if it’s carbon)
- Optional pannier mounts allow you to add panniers for bigger trips
- More pockets give additional storage options
- Dropper-post friendly – the Speed Connect seatpost connector requires only 30mm available seatpost
What to choose, how to fit
The AeroPack options:
Standard or Cargo
The Standard AeroPack is a sleek, aerodynamic design which maintains a clean profile. Ideal for riders who prioritise speed and efficiency while still enjoying the reliable 18L main storage compartment.
The AeroPack Cargo has all the benefits of the Standard AeroPack but with added versatility. The expandable mesh side pockets provide an extra 3L of easily accessible storage for items you want to keep within reach. Perfect for longer journeys or when you need to carry additional essentials.
Both versions feature our trusted quick-release attachment system and waterproof construction – simply choose the option that best suits your carrying needs.
Carbon vs Alloy
This is purely down to weight and cost. The Carbon AeroPack is just as strong as the Alloy version (just ask our racers doing 2000+ km off-road MTB races).
The easiest way to decide which is better for you is to weigh up how much you wish to spend on the setup, and how much of a factor weight is to your objectives.
Bigger budget, high weight concerns = carbon
Medium budget, low weight concerns = alloy
The other main difference between Carbon and Alloy AeroPacks is the triple bosses, which are on the Alloy version but not the Carbon. These allow you to run Cargo Cages with Cage Packs or water bottle cages, further expanding your carrying capacity.
Non-Pannier and Pannier-Mount Versions
We also offer a range of pannier bags, specially designed to fit our AeroPacks and Racks, using our X-Clamp technology to offer a secure, robust, and rattle-free ride.
When selecting the options for your AeroPack, you’ll be asked to choose whether or not your Arch will have pannier mounts. It is not possible to add these onto the Arch later, so it’s important to decide now whether you’re going to want to use side panniers with your Tailfin setup in the future. The non-pannier version of the Arch is the sleekest and slimmest version, whilst the pannier-mount version allows you to carry more, using pannier bags.
Standard or Extended seatpost connector?
If you use a small frame size or a low saddle height, we’d recommend using the extended seatpost connector as this allows the AeroPack to sit further back, allowing better access to the bag and volume-carrying capability.
The extended seatpost connector can be selected when choosing the options for your AeroPack. Due to the modular design of our systems, you can always add this later by purchasing it as an accessory.
Why choose an AeroPack over a Rack?
For an in-depth look at this question, visit our ‘Rack or AeroPack – which one is right for me?’ article.
If you want the simple answer, it can be summed up well as this: If you plan to take your bikepacking off-road a lot of the time, we would recommend an AeroPack, as it’s the most simple of our rear systems. It has a less intricate mounting system than a Tailfin Rack and AP20 Trunk Top Bag combo which makes it lighter and provides complete reliance when off-road. As an additional benefit, as the bag is an integral part of the structure, noise, and rattle are eliminated when really pushing the boundaries of where you can explore.
If weight is also a high concern for you, for instance, if you plan on undertaking an ultra-distance race, want to do some fast touring on your road bike, or simply want the lightest Tailfin setup we produce then you need to go for an AeroPack – it’s nearly 150 grams lighter than the equivalent Tailfin Rack.
Fitting to your bike
Our AeroPacks are designed to fit 99% of bikes on the market – whether that’s road, touring, gravel, hardtails, or even full-suspension mountain bikes.
We do this by offering a variety of ways to mount to your bike, so our systems even fit bikes without rack mounting points:
For a more detailed explanation of mounting options for your bike read our Mounting Your Rack or AeroPack Guide.
Whilst all mounting options will work well, we would always recommend Axle Mounting (Option 1) as it provides the most robust and weight-bearing mount. If you’re unsure on your axle type, use our handy tool here.
Please see this Video Guide for for properly attaching the Seat Post Connector.
Modularity
A unique feature of Tailfin products is modularity. Components have been designed to be replaceable and can be swapped over. So if you purchase an Alloy AeroPack and panniers for your commuting and then want to save weight for an upcoming ultra-distance road race, it’s possible to buy a Carbon Arch on its own and swap it over in a matter of minutes, ready for the start line.
Alternatively, if you wanted to swap your AeroPack out to become a Rack, you can do so by purchasing a Top Stay and AP20 Connector Part, then simply remove your AeroPack connector parts, and now you have 2 separate set-ups to choose from.
Repairability and other details
Repairability
The other distinct advantage of being completely modular is that damage to one part of the system doesn’t mean the end of your AeroPack, as each component can be replaced easily. Our AeroPacks are guaranteed for 5 years for equipment failures/defects, but in theory, they should last a lifetime of use.
All individual parts for AeroPack systems can be found and purchased in the Accessories and Spares section of the website.
Which accessories can I use with a Tailfin AeroPack?
Further information
For another deep dive into the AeroPack, check out Cass Gilbert’s in-depth review on Bikepacking.com.
If you can’t find what you need here, you can always contact our friendly Customer Service team.
AeroPack FAQs
If you can’t find what you need here, you can always contact our friendly Customer Service team.
