Aethos Expert

Specialized Aethos Expert: The New Breed of Lightweight Road Bike

The Aethos Expert is designed to straddle the line between perfect ride quality, extreme lightweight, and undeniable style. This model is no exception, delivering a sublime riding experience that redefines the standard for modern Road Bikes.

Performance Redefined: Extreme Lightweight & Ride Quality

The Aethos frame has been designed with the perfect combination of ultimate ride feel, light weight, and style. Whether you are accelerating up steep pitches, descending technical descents, or settling in for all-day saddle comfort on the longest coffee rides, the Aethos hits the mark. But how, you ask?

The Art of Reinvention

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. Furthermore, we perfected an entirely-new layup and process over multiple decades. This leads to the lightest frame out there ($585\text{grams}$ for the $\text{S-Works}$, size $56\text{cm}$). The Aethos is more than just a new bike, it’s the first of a new breed.

Confidence-Inspiring Ride Characteristics

A featherweight frame is useless without confidence-inspiring ride characteristics. Therefore, we 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.

The Aethos Expert Build: Ready to Excite

The Aethos Expert comes with quick-shifting, low-maintenance Ultegra Di2 electronic shifting and hydraulic disc brakes. These high-performance components are paired with bomb-proof DT Swiss R470 Disc wheels, giving you the perfect steed to excite you out on the road. Every detail, from the derailleur hangers to the fork expander plug, has been designed with style, weight, and durability in mind. Finally, we’ve spec’d it with Roval’s all-new Alpinist carbon seatpost, further saving weight and improving ride characteristics.

Technical Specifications

Frameset

• Frame: Aethos FACT $10\text{r}$ Carbon, Rider First Engineered™, Threaded BB, $12\times 142\text{mm}$ thru-axle, flat-mount disc
• Fork: FACT Carbon, $12\times 100\text{mm}$ thru-axle, flat-mount disc

Drivetrain

• Shift Levers: Shimano Ultegra Di2 Disc R8070
• Front/Rear Derailleur: Shimano Ultegra Di2 R8050 ($11\text{-speed}$)
• Crankset: Shimano Ultegra R8000, HollowTech 2, $11\text{-speed}$
• Cassette: Shimano Ultegra R8000, $11\text{-speed}$, $11\text{-30t}$
• Bottom Bracket: Shimano Threaded BSA BB

Brakes

• Front/Rear Brake: Shimano Ultegra, Hydraulic disc

Wheels & Tires

• Front/Rear Wheel: DT Swiss R470 rim, $20\text{mm}$ internal width, tubeless ready, $24\text{h}$, Specialized full sealed bearing thru axle hub.
• Front/Rear Tire: S-Works Turbo, $120\text{TPI}$, folding bead, BlackBelt protection, $700\times 26\text{mm}$

Cockpit

• Handlebars: Specialized Expert Shallow Drop, alloy, $125\text{mm}$ drop x $75\text{mm}$ reach
• Stem: Specialized Pro SL, alloy, $4\text{-bolt}$
• SeatPost: Roval Alpinist Carbon Seatpost
• Saddle: Body Geometry Power Expert

Discover the full lineup and find your perfect ride on our Specialized Aethos Page.