2023 Specialized Aethos Pro - Shimano Ultegra Di2 - Satin Obsidian / Chaos Pearl Granite / Birch


Sale price $5,999.99 Regular price $8,000.00

The Aethos line promises three things—exceptional light weight, perfectly-balanced ride characteristics, and undeniable style—and this Aethos pro is no exception. Aethos: Billions of calculations in the pursuit of one thing—the perfect ride.

Spec’d with Shimano's Ultegra Di2 that delivers clean, crisp shifts and Roval’s Alpinist wheels mated to DT Swiss 350 hubs and your left with a no-fuss build that delivers, mile after mile.

  • The Aethos frame has been designed with the perfect combination of ultimate ride feel, light weight, and style—from accelerating up steep pitches and descending technical descents, to all-day saddle comfort on even the longest coffee rides, the Aethos hits the mark. But how, you ask? By reinventing the traditional road shape found on bikes of the past, we’ve subtly altered these shapes to deliver massive gains in stiffness and balance, all without affecting weight or durability. Pair that with an entirely new layup and process that we’ve perfected over multiple decades and you have the lightest frame out there (585 grams, S-Works, size 56cm). The Aethos is more than just a new bike, it’s the first of a new breed.
  • A featherweight frame is useless without confidence-inspiring ride characteristics, which is why we’ve developed the Aethos to have the perfect balance of front and rear stiffness combined with exceptional ride quality. By studying the flexing and breathing of carbon fiber, we were able to discover groundbreaking findings about how forces flow through frames. Just a few pedal strokes and you’ll realize this sublime ride sets a new standard.
  • Every detail, from the derailleur hangers to the fork expander plug have been designed with style, weight, and durability in mind. We’ve also spec’d it with Roval’s all-new Alpinist carbon seatpost and wheels, further saving weight and improving ride characteristics. Everything in pursuit for the perfect ride

        Technical Specifications



        Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc



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



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


        Specialized Pro SL, alloy, 4-bolt


        Supacaz Super Sticky Kush


        Body Geometry Power Pro, hollow titanium rails


        Roval Alpinist Carbon Seatpost

        Seat Binder

        Specialized Alloy, 30mm


        Front Brake

        Shimano Ultegra R8170, hydraulic disc

        Rear Brake

        Shimano Ultegra R8170, hydraulic disc


        Shift Levers

        Shimano Ultegra R8170, hydraulic disc

        Front Derailleur

        Shimano Ultegra R8150, braze-on

        Rear Derailleur

        Shimano Ultegra R8150, 12-speed


        Shimano Ultegra, 12-speed, 11-30t


        Shimano Ultegra R81000 with 4iiiis Power Meter



        Bottom Bracket

        Shimano Threaded BSA BB


        Shimano M8100, 12-speed w/ quick link

        Wheels & Tires

        Front Wheel

        Roval Alpinist CL II, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Tubeless Ready

        Rear Wheel

        Roval Alpinist CL II, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Tubeless Ready

        Front Tire

        S-works Turbo 2BR, 700x28mm

        Rear Tire

        S-works Turbo 2BR, 700x28mm

        Inner Tubes

        700x20-28, 48mm Presta Valve



        6.93kg (15 lb, 4.4 oz)

        Weight Size


        *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.


        49 52 54 56 58 61
        Crank Length 165mm 170mm 172.5mm 172.5mm 175mm 175mm
        Handlebar Width 380mm 400mm 420mm 420mm 440mm 440mm
        Stem Length 80mm 90mm 100mm 100mm 110mm 110mm
        Saddle Width 155mm 155mm 143mm 143mm 143mm 143mm
        Seatpost Length 300mm 300mm 360mm 360mm 360mm 360mm
        Wheelbase 973mm 975mm 978mm 991mm 1005mm 1012mm
        Top Tube Length, Horizontal 508mm 531mm 540mm 562mm 577mm 595mm
        Bike Standover Height 705mm 728mm 748mm 769mm 796mm 824mm
        Seat Tube Length 431mm 462mm 481mm 504mm 532mm 567mm
        Seat Tube Angle 75.5° 74° 74° 73.5° 73.5° 73°
        Stack 514mm 527mm 544mm 565mm 591mm 612mm
        Reach 375mm 380mm 384mm 395mm 402mm 408mm
        Head Tube Length 109mm 120mm 137mm 157mm 184mm 204mm
        Head Tube Angle 71.75° 72.5° 73° 73.5° 73.5° 74°
        BB Height 266mm 266mm 268mm 268mm 268mm 268mm
        BB Drop 74mm 74mm 72mm 72mm 72mm 72mm
        Trail 63mm 58mm 58mm 55mm 55mm 52mm
        Fork Length, Full 369mm 369mm 369mm 369mm 369mm 369mm
        Fork Rake/Offset 47mm 47mm 44mm 44mm 44mm 44mm
        Front Center 574mm 577mm 579mm 591mm 606mm 613mm
        Chainstay Length 410mm 410mm 410mm 410mm 410mm 410mm

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