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The S Series racks are designed for aerodynamic advantage and work in tandem with the AeroPack Trunk.
What are the differences?
The models differ by material and weight:
S ONE = Carbon Arch + Carbon Top Stay
S TWO = Carbon Arch + Alloy Top Stay
S THREE = Alloy Arch + Alloy Top Stay
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) Please email email@example.com for information on how to order these parts.
Thru Axle 12mm 1.0mm Pitch
Thru Axle 12mm 1.5mm Pitch
Thru Axle 12mm 1.75mm Pitch
The S Series is our rack that allows to top mounting only. It’s also quick release and fits any bike.
The Tailfin S Series Pannier Rack keeps it simple with single minded purpose.
The rigid wishbone-shaped carbon or alloy frame offers exceptional agility, with no sway or rattle.
The purpose of the S Series rack is to accommodate the AeroPack Trunk.
Whether it’s weight or aesthetics – the design of the S series rack is a welcome addition to any bike.
The twin top stay adds further functionality so you can attach lightweight gear
Ingenious fast-release dropouts make it simple for you to use one rack for all of your bikes or one bike for everything.
The S Series rack will fit nearly all tyre sizes:
26″ – Up to 4″/100mm
27.5″ – Up to 3.5″/85mm
29″ – Up to 3″ /75mm
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.
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)
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.
4″ or 100mm
3.5″ or 90mm
3″ or 75mm
AeroPack Trunk SX
2x SL or UD bags
Axle or Frame
Any seatpost – inc. Aero
Around 10 seconds
Anti-theft screws included
So I originally purchased the S Series Rack & Bag Set disregarding the max laptop spec listed. So when it arrived, of course, my 15" laptop didn't fit. But thanks to the amazing customer support team, James specifically, I was able to exchange everything for a Tailfin X Series | Rack & Bag Sets. I was able to use it today to pick up some groceries here in California during the shelter in place. It's perfect!
After 5 years of wearing a backpack to bring our lunches, clean underwear, shaving supplies and miscellaneous items back and forth to work, we found tailfin. My wife and I both have carbon aero bikes and found tailfin and the waterproof bag to be an elegant solution to sweaty backs. We assembled and installed it from the box in 1.5 hrs (it didn't take that long but we were extra careful and watched videos and read all the directions). The frame is beautiful aero carbon and it is unbelievably stable despite hitting bridge and gutter sections of a 7 mile causeway to Sanibel at 30+ mph. Sure it adds a little weight but it looks clean and uncluttered while hauling our necessary cargo back and forth for 40 minutes each sunrise and sunset. Thanks Nick and your team for allowing us to hang up our backpacks! And it may seem like a premium price but it is absolutely worth spending the money to get the best.
Not just lightweight, but it's the stability which also really stands out. I use this everyday for commuting and I barely know its there when compared to my side mounted old scaffold frame thing.
I would recommend and it gets people asking about it in rides out.
COVID-19 UPDATE: We are open for business. Orders will despatch same-day, but some areas may experience minor transit delays. Read more Dismiss