Clear Icon
Search Icon
Clear Icon
Search Icon

S-Works Aethos - Dura-Ace Di2


2022 S-Works Aethos - Dura-Ace Di2

Don’t get us wrong, we’re all for racing. Grand Tour top steps, Classic’s Monuments—they’re in our DNA. But sometimes riding simply to ride, riding for the love of riding, is just what we need. And this is what the Aethos lives for. Sure, it’s given nothing up to performance, and happens to be the lightest frame out there, but with no compromise to style. Aethos: Billions of calculations in the pursuit of one thing—the perfect ride.

Top off the world’s lightest frame with Shimano’s legendary Dura-Ace Di2 groupset and Roval’s featherweight Alpinist wheels and you’re left with a perfectly balanced top-tier ride that gives up nothing in the name of performance.

Technical Specifications

Add Icon



S-Works Aethos FACT 12r Carbon, Rider First Engineered™, Threaded BB, Electronic cable routing only, 12x142mm thru-axle, flat-mount disc



S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc



S-Works Short & Shallow, 125mm Drop, 75mm Reach w/Di2 Hole


S-Works SL, alloy, titanium bolts, 6-degree rise


Supacaz Super Sticky Kush


Body Geometry S-Works Power, carbon fiber rails, carbon fiber base


Roval Alpinist Carbon Seatpost

Seat Binder

Specialized Alloy, 30.0mm, titanium bolt


Front Brake

Shimano Dura-Ace R9270, hydraulic disc

Rear Brake

Shimano Dura-Ace R9270, hydraulic disc


Shift Levers

Shimano Dura-Ace R9270, hydraulic disc

Front Derailleur

Shimano Dura-Ace R9250, braze-on

Rear Derailleur

Shimano Dura-Ace R9250, 12-speed


Shimano Dura-Ace, 12-speed, 11-30t


Shimano XTR M9100, 12-speed w/ quick link


Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter



Bottom Bracket

Shimano Dura-Ace, BB-R9100

Wheels & Tires

Front Wheel

Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 21h, DT Swiss Aerolite spokes

Rear Wheel

Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes

Front Tire

Turbo Cotton, 320 TPI, 700x26mm

Rear Tire

Turbo Cotton, 320 TPI, 700x26mm

Inner Tubes

Turbo Ultralight, 48mm Presta valve

* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.


Add Icon
Crank Length165mm170mm172.5mm172.5mm175mm175mm
Handlebar Width380mm400mm420mm420mm440mm440mm
Stem Length80mm90mm100mm100mm110mm110mm
Saddle Width155mm155mm143mm143mm143mm143mm
Seatpost Length300mm300mm360mm360mm360mm360mm
Head Tube Length109mm120mm137mm157mm184mm204mm
Head Tube Angle71.75°72.5°73°73.5°73.5°74°
BB Height266mm266mm268mm268mm268mm268mm
BB Drop74mm74mm72mm72mm72mm72mm
Fork Length, Full369mm369mm369mm369mm369mm369mm
Fork Rake/Offset47mm47mm44mm44mm44mm44mm
Front Center574mm577mm579mm591mm606mm613mm
Chainstay Length410mm410mm410mm410mm410mm410mm
Top Tube Length, Horizontal508mm531mm540mm562mm577mm595mm
Bike Standover Height705mm728mm748mm769mm796mm824mm
Seat Tube Length431mm462mm481mm504mm532mm567mm
Seat Tube Angle75.5°74°74°73.5°73.5°73°

Rider Reviews

  • 5
  • 6 Reviews

So good that I picked up another!

My Aethos Expert was destroyed when a car hit me. After a season on my Expert pre-destruction, I knew I had to replace it with another Aethos. Luckily, an S-Works frameset in Chameleon Eyris had the shortest lead time, and I built it up with my Ultegra Di2 group and Alpinist CLX wheels. I'm starting my second season on the S-Works and I smile every time I ride it. The ride is responsive and comfortable, and it makes the most of my energy by converting it to forward motion. It doesn't bat an eye at the 2 miles of gravel road at camp that bookends every ride, and the only remaining performance limitation is my own fitness :) Yes, I feel terribly guilty when it gets dirty. I'm 6'3"/195 lbs and went with the 58cm on both occasions. I road bike primarily for fitness to improve my trail & DH riding. My Aethos makes me want to hit the road more, and while I have no KOMs, I feel super human on this thing.

Would Recommend?



S Works Aethos

Super responsive and nimble. Very comfortable and climbs like a goat. Matte black color and branding is modern and subtle. I’m 5’3 and have a 49, fit is perfect for me.

Would Recommend?

Verified Buyer


Steve A.



I had my local shop build on an S-Works frame with Ultegra (2022) so I could afford to upgrade wheelset and cockpit. I love how the frame draws no attention to itself. I'm a relatively casual rider and was self conscious about how much my previous titanium ride suggested I am either stronger or richer than I really am. I don't want people thinking about my bike, I just want to enjoy the ride. It worked; I can't believe how quickly I acclimated to my Aethos. It doesn't ask me to think about or notice anything other than the road itself. It twitches when I ask it to, but otherwise hums along with stability.

Would Recommend?



Amazing Ride

I am a 61yo male who now rides recreationally at 6-8,000miles per year. Preferred courses are hilly. In the last 15 or so years have had a Cervelo R3 SL, a Cervelo R5, a Trek Emonda SL and a BMC Roadmachine (my current other road bike). I have also rented a number of different Specialized, Trek, and Pinarello road bikes. Aero frames are of little interest to me. I was intrigued by the Aethos and opted to take the plunge on an S-Works Aethos frame. Built it up with Dura-Ace Di2/hydraulic, Hunt wheels with 28mm Schwalbe Tubeless tires. Have now been riding it for 8+ months with a few thousand miles on it, alternating some with the BMC. Gotta say, this bike's ride is absolutely phenomenal - solid and confidence inspiring on all terrains, especially hilly ones. The other thing is I just love it's understated looks - rode a century and no-one knew what it was! Perfect! Easily my favorite ever ride - The Aethos just makes me smile every time I ride it!

Would Recommend?



Simply the best

This is honestly the best bike I’ve ever ridden. Light, stiff, beautiful to look at, epic climbing and very stable & balanced going downhill too. Sprints without a problem - on every pedal stroke, not one watt is wasted. Super comfy too. Took mine to do Raid the Pyrenees and had not one second of regret. Sadly it was destroyed a month ago by a car driver! Needless to say, there will be another Aethos on the way as soon as I can ride again!

Would Recommend?



Perfect in every way

I love this bike because it makes me want to go out and ride! Amazing ride quality and timeless style. I wouldn't want to own any other bike.

Would Recommend?