Specialized Aethos S-Works Di2

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. A featherweight frame is useless without confidence-inspiring ride characteristics, which is why Specialized has 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, Specialized was 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. Specialized has 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.

Frame
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, Specialized has 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 Specialized has 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.

Tech Specs

Frameset

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

Drivetrain

• Cassette: Shimano Dura-Ace, 12-speed, 11-30t
• Chain: Shimano XTR M9100, 12-speed w/ quick link
• Bottom Bracket: Shimano Dura-Ace, BB-R9100
• Chainrings: 52/36T
• Crankset: 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

Wheels & Tires

• 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

Suspension

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

Brakes

• Rear Brake: Shimano Dura-Ace 9200, Hydraulic Disc
• Front Brake: Shimano Dura-Ace 9200, Hydraulic Disc

Cockpit

• Seat Binder: Specialized Alloy, 30.0mm, titanium bolt
• SeatPost: Roval Alpinist Carbon Seatpost
• Saddle: Body Geometry S-Works Power, carbon fiber rails, carbon fiber base
• Tape: Supacaz Super Sticky Kush
• Stem: S-Works SL, alloy, titanium bolts, 6-degree rise
• Handlebars: S-Works Short & Shallow, 123mm Drop, 75mm Reach w/Di2 Hole

Manufacturerìs note: 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.