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    S-Works Aethos - Dura-Ace Di2


    S-Works Aethos - Dura-Ace Di2

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    We deliver! Just say when and how.

    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

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



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


    Shimano XTR M9100, 12-speed w/ quick link

    Bottom Bracket

    Shimano Dura-Ace, BB-R9100




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

    Rear Derailleur

    Shimano Dura-Ace R9250, 12-speed

    Front Derailleur

    Shimano Dura-Ace R9250, braze-on

    Shift Levers

    Shimano Dura-Ace R9270, hydraulic disc


    Inner Tubes

    700x20-28, 48mm Presta Valve

    Rear Tire

    S-works Turbo 2BR, 700x28mm

    Front Tire

    S-works Turbo 2BR, 700x28mm

    Rear Wheel

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

    Front Wheel

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



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


    Rear Brake

    Shimano Dura-Ace 9200, Hydraulic Disc

    Front Brake

    Shimano Dura-Ace 9200, Hydraulic Disc


    Seat Binder

    Specialized Alloy, 30.0mm, titanium bolt


    Roval Alpinist Carbon Seatpost


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


    Supacaz Super Sticky Kush


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


    S-Works Short & Shallow, 123mm Drop, 75mm Reach w/Di2 Hole

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


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    Crank Length165mm170mm172.5mm172.5mm175mm175mm
    Handlebar Width380mm400mm420mm420mm440mm440mm
    Stem Length80mm90mm100mm100mm110mm110mm
    Saddle Width155mm155mm143mm143mm143mm143mm
    Seatpost Length300mm300mm360mm360mm360mm360mm
    Top Tube Length, Horizontal508mm531mm540mm562mm577mm595mm
    Bike Standover Height705mm728mm748mm769mm796mm824mm
    Seat Tube Length431mm462mm481mm504mm532mm567mm
    Seat Tube Angle75.5°74°74°73.5°73.5°73°
    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

    Manual Downloads

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    Rider Reviews

    • 5
    • 3 Reviews

    Awesome bike - never stop smiling !

    Yes this bike is light, and it doesn’t look overly like many more angular modern road bikes but you wait until you ride it. It handles like a dream & for sure its lightness helps on the hills. I marvel every time I ride mine at its effortless sure footed cornering and that it’s just such a huge pleasure to ride. Don’t think about it any longer - go on, take the plunge & get yourself one. You will truly never stop smiling!!!




    Yes; I read all the reviews, saw all the videos, but its only when I actually rode it that I really understood what Specialized have achieved here. It hearkens back to my childhood days when I first learn to ride a bike without the help of side wheels. With a big silly grin pasted on my face and the sensation of effortless freedom, I can tell you that this bike is not about KOM's or TT's or even winning races. In fact, if my GPS unit could measure Fun instead of Wattage, it would max-out on my every ride. For once; its all fun and games. No regrets.