2023 Specialized Aethos Expert 105 Di2 Satin Metallic White Sage/White Sage 52

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The Aethos line promises three things—exceptional light weight, perfectly balanced ride characteristics, and undeniable style. Aethos: Billions of calculations in the pursuit of one thing—the perfect ride.

And with this frame set, you have the perfect canvas to begin creating your dream ride.

  • 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 for the perfect ride.
Aethos FACT 10r Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc
FACT Carbon, 12x100mm thru-axle, flat-mount disc
Power Comp 143mm
Roval Alpinist Carbon Seatpost
Seat Binder
Shimano 105 R7170, hydraulic disc
Specialized Future Stem Comp Black 31.8 6D 90mm
S Works Carbon Shallow Handlebars 40cm
BBB Flexribbon Gel Bartape Black
Front Brake:
Shimano 105, Hydraulic disc
Rear Brake:
Shimano 105 R7170, hydraulic disc
Shift Levers:
Shimano 105 Di2 7170
Shimano 105, 12-speed, 11-34t
FC-R7100, 105, 12-Speed, Holllowtech 2
Rear Derailleur:
Shimano 105 Di2 7150
Front Derailleur:
Shimano 105 Di2 7150, braze on
Shimano SLX M7100, 12-speed w/ quick link
Bottom Bracket:
Shimano Threaded BSA BB
Front Wheel:
Shimano WH-RS710 C32 Clincher Carbon 32mm
Rear Wheel:
Shimano WH-RS710 C32 Clincher Carbon 32mm
Inner Tubes:
Presta Valve Standard, 60mm valves
Front Tire:
PIRELLI PZero Road 700x28c
Rear Tire:
PIRELLI PZero Road 700x28c



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