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

2021 SPECIALIZED S-WORKS AETHOS - DURA ACE DI2 DISC ROAD BIKE
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.

FEATURES :
• 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

SPECIFICATION :
Frame
S-Works Aethos FACT 12r Carbon, Rider First Engineered, Threaded BB, Electronic cable routing only, 12x142mm thru-axle, flat-mount disc
Fork
S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc
Handlebars
S-Works Short & Shallow
Stem
S-Works SL, alloy, titanium bolts, 6-degree rise
Tape
Supacaz Super Sticky Kush
Saddle
Body Geometry S-Works Power, Carbon Fiber Rails, Carbon Fiber Base
Seatpost
Roval Alpinist Carbon Seatpost
Front Brake
Shimano Dura-Ace R9170, hydraulic disc
Seat Binder
Specialized Alloy, 30.0mm, titanium bolt
Rear Brake
Shimano Dura-Ace R9170, hydraulic disc
Shift Levers
Shimano Dura-Ace R9170, hydraulic disc
Front Derailleur
Shimano Dura-Ace Di2 R9150, braze-on
Rear Derailleur
Shimano Dura-Ace Di2 R9150, 11-speed
Chain
Shimano Dura-Ace, 11-speed
Cassette
Shimano Dura-Ace R9100, 11-speed, 11-30t
Crankset
Shimano Dura-Ace R9100, HollowTech 2, 11-speed, Dual-sided Powermeter, 52/36T
Bottom Bracket
Shimano Dura-Ace, BB-R9100
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