Steed Cycles
Specialized 2021 Aethos Pro Ultegra Di2 - Steed Cycles

Specialized 2021 Aethos Pro Ultegra Di2

  • $9,899.99


In-Store Pickup Only

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.

Spec’d with Shimano’s tried-and-true Ultegra Di2 electronic shifting to deliver clean, crisp shifts and Roval’s Alpinist wheels mated to DT Swiss 350 hubs. This is a no-fuss build that delivers, mile after mile.

  • 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. We’ve 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

Aethos FACT 10r Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc

FORK

FACT Carbon, 12x100mm thru-axle, flat-mount disc

FRONT WHEEL

Roval Alpinist CL, 21H

REAR WHEEL

Roval Alpinist CL, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes

INNER TUBES

Turbo Ultralight, 48mm Presta valve

FRONT TIRE

S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm

REAR TIRE

S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm

CRANKSET

Shimano Ultegra R8000, HollowTech 2, 11-speed, 52/36T

BOTTOM BRACKET

Shimano Threaded BSA BB

FRONT DERAILLEUR

Shimano Ultegra Di2 R8050, braze-on

REAR DERAILLEUR

Shimano Ultegra Di2 R8050, GS medium cage

CASSETTE

Shimano Ultegra R8000, 11-speed, 11-30t

CHAIN

Shimano Ultegra, 11-speed

FRONT BRAKE

Shimano Ultegra R8070, hydraulic disc

REAR BRAKE

Shimano Ultegra R8070, hydraulic disc

HANDLEBARS

S-Works Short & Shallow; 125mm Drop, 75mm Reach w/Di2 Hole

TAPE

Supacaz Super Sticky Kush

STEM

Specialized Pro SL, alloy, 4-bolt

SADDLE

Body Geometry Power Pro

SEATPOST

Roval Alpinist Carbon Seatpost

SEAT BINDER

Specialized Alloy, 30.0mm

SWAT

Integrated cycle computer mount