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Specialized S-Works Aethos Dura-Ace Di2 Disc Road Bike 2021

Specialized S-Works Aethos Dura-Ace Di2 Disc Road Bike 2021
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Specialized S-Works Aethos Dura-Ace Di2 Disc Road Bike 2021


Specialized's S-Works Aethos is the lightest frameset they've ever made, with the frame coming in at a featherweight 588 grams (size 56). This road bike has been built up with Shimano's flagship electronic disc Dura-Ace Di2 components and Roval's lightest wheels - the Alpinist CLX. The idea behind the Aethos was to create the perfect bike, one that's not built for racing, but for the pure joy of riding, without compromising any of the performance of a top-end race bike. 

The FACT 12r carbon layup and updated tube shapes are responsible for the huge weight reduction, and the bike sits below the UCI lower limit, without losing any of the stiffness or great handling that this material brings to a build. On top of this, you get the geometry and fit of the Tarmac SL7, alongside Rider-First Engineered™ design ensuring equal performance and ride characteristics from the smallest to the largest frame size. 

The frameset is electronic groupset compatible only, and Shimano Dura-Ace R9170 11-speed components make up the drivetrain, alongside hydraulic disc brakes. Shifting is precise, fast and easy to actuate by just a light press of the levers, and stopping power is effective at speed even in wet conditions. Further shaving off the grams is Roval's Alpinist carbon seatpost, their lightest to date, and the cockpit consists of an S-Works SL alloy stem and S-Works Short & Shallow handlebar.


·         S-Works Aethos FACT 12r Carbon frame and fork

·         Same fit and ride geometry as the Tarmac SL7

·         Electronic cable routing specific frame

·         68mm BSA threaded bottom bracket

·         Rider-First Engineered™ design

·         Frame only claimed weight - 585 grams, size 56cm

·         Shimano Dura-Ace R9170 hydraulic disc 11-speed components

·         Dual-sided power meter

·         Roval Alpinist carbon seatpost

·         Roval Alpinist CLX wheels and Specialized Turbo Cotton 26mm tyres

·         32mm tyre clearance


Frame   Specialized S-Works Aethos FACT 12r Carbon, Rider First Engineered™, 68mm BSA threaded BB, electronic cable routing only, 12x142mm thru-axle, flat-mount disc

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

Bottom Bracket                BB-R9100

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

Handlebar           Specialized S-Works Short & Shallow

Bar Tape              Supacaz Super Sticky Kush

Front Brake        Shimano Dura-Ace R9170, hydraulic disc

Rear Brake          Shimano Dura-Ace R9170, hydraulic disc

Brake Levers      Shimano Dura-Ace R9170

Front Derailleur                Shimano Dura-Ace Di2 R9150, braze-on

Rear Derailleur  Shimano Dura-Ace Di2 R9150, 11-speed

Shift Levers        Shimano Dura-Ace Di2 Disc R9170

Chain     Shimano Dura-Ace, 11-speed

Cassette              Shimano Dura-Ace CS-R9100, 11-30t, 11-speed

Crankset              Shimano Dura-Ace R9100, HollowTech 2, 11-speed, dual-sided power meter, 52/36T

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 Tyre           Specialized Turbo Cotton, 320 TPI, 700x26mm, clincher

Rear Tyre             Specialized Turbo Cotton, 320 TPI, 700x26mm, clincher

Saddle  Specialized Body Geometry S-Works Power, carbon fibre rails, carbon fibre base

Seatpost              Roval Alpinist carbon seatpost

Pedals   Available to be purchased separately

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$ 7,585.00
$ 13,308.00
  • Stock: In Stock
  • Model: 132452

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