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Specialized Aethos Pro Ultegra Di2

Specialized Aethos Pro Ultegra Di2
  • Color: Satin Blue Murano/Carbon/Cobalt
Color: Satin Blue Murano/Carbon/Cobalt
Size: Select size
Please select options Unavailable
Popular Item please call for availability. 508-746-2756


The Aethos line promises three things: unprecedented weight savings, perfectly-balanced ride quality, and undeniable style. For the Aethos Pro, we threw out the rulebook to create the ride of your life.

- 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 Roval Alpinist CL, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes
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 S-Works Short & Shallow
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 Pro, Hollow Titanium Rails, Carbon Fiber Base
Seat Post Roval Alpinist Carbon Seatpost

* Subject to change without notice.

Part Numbers

Option UPC MPN
Satin Blue Murano/Carbon/Cobalt / 49cm 888818694334 97221-1249
Satin Blue Murano/Carbon/Cobalt / 52cm 888818694341 97221-1252
Satin Blue Murano/Carbon/Cobalt / 54cm 888818694358 97221-1254
Satin Blue Murano/Carbon/Cobalt / 56cm 888818694365 97221-1256
Satin Blue Murano/Carbon/Cobalt / 58cm 888818694372 97221-1258
Satin Blue Murano/Carbon/Cobalt / 61cm 888818694389 97221-1261