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Specialized Aethos Expert - 2021

Specialized Aethos Expert
  • Color: Gloss Ice Blue/Teal Tint/Flake Silver
  • Color: Satin Red Tint/Dream Silver
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What if we used every ounce of experience we’ve gained serving riders over the past 46 years and built a bike made simply for the love of riding? The Aethos is designed to straddle the line between perfect ride quality, extreme lightweight, and undeniable style. The Aethos Expert model is no exception.

- 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—everything in pursuit of the perfect ride.


Frame Aethos FACT 10r Carbon, Rider First Engineered, Threaded BB, 12x142mm thru-axle, flat-mount disc
Fork FACT Carbon, 12x100mm thru-axle, flat-mount disc
Rims/Wheels DT R470 Disc, sealed cartridge hubs, 14g spokes, 24h
Tires S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700c x 26
Crankset Shimano Ultegra R8000, HollowTech 2, 11-speed
Chain Shimano Ultegra, 11-speed
Front Derailleur Shimano Ultegra Di2 R8050, braze-on
Rear Derailleur Shimano Ultegra Di2 R8050, GS medium cage
Shifters Shimano Ultegra Di2 Disc R8070
Handlebars Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
Tape/Grips Supacaz Super Sticky Kush
Stem Specialized Pro SL, alloy, 4-bolt
Brakes Shimano Ultegra R8070, hydraulic disc
Pedals Sold separately
Saddle Body Geometry Power Expert, Hollow Titanium Rails
Seat Post Roval Alpinist Carbon Seatpost

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Gloss Ice Blue/Teal Tint/Flake Silver / 49cm 888818672936 97221-3049 210000048177
Gloss Ice Blue/Teal Tint/Flake Silver / 52cm 888818672943 97221-3052 210000048181
Gloss Ice Blue/Teal Tint/Flake Silver / 54cm 888818672950 97221-3054 210000048185
Gloss Ice Blue/Teal Tint/Flake Silver / 56cm 888818672967 97221-3056 210000048188
Gloss Ice Blue/Teal Tint/Flake Silver / 58cm 888818672356 97221-3058 210000048191
Gloss Ice Blue/Teal Tint/Flake Silver / 61cm 888818672363 97221-3061 210000048194
Satin Red Tint/Dream Silver / 49cm 888818672370 97221-3149 210000048196
Satin Red Tint/Dream Silver / 52cm 888818672387 97221-3152 210000048198
Satin Red Tint/Dream Silver / 54cm 888818672394 97221-3154 210000048200
Satin Red Tint/Dream Silver / 56cm 888818672400 97221-3156 210000048202
Satin Red Tint/Dream Silver / 58cm 888818672417 97221-3158 210000048204
Satin Red Tint/Dream Silver / 61cm 888818672424 97221-3161 210000048206