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Aethos Comp

Shimano 105 Di2

$3,999.99-$5,000

4.3

4 Reviews

What if we used every ounce of experience we’ve gained serving riders over the past…

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We deliver! Just say when and how.

Reinventing Round

Reinventing Round

Meditating on the breathing and swaying of a bike under load in the lab, lead engineer Peter Denk had an epiphany—true performance lies in the shape, not the material. After a few hundred thousand supercomputer simulations, we knew we were right.

Break the Rules

Break the Rules

At just 585 grams, the Aethos frame may be too light for the UCI rule book, but when the pros get a chance to just ride, it’s the Aethos they reach for. Ride along with the World Champ as he takes us up his favorite climb on a very special Aethos.

Aethos X 105 Di2

Aethos X 105 Di2

Straddling the line between perfect ride quality and undeniable style, the world’s lightest production road bike now comes with Shimano’s new 105 Di2 12-speed electronic shifting. Whether climbing mountain passes or soaring gorgeous descents, you’ve got the perfect steed to do it all.

#1 Again: 2023 Gran Fondo Awards
Voted Best Brand 5 Years in a Row

#1 Again: 2023 Gran Fondo Awards

The riders have spoken! For the fifth year in a row, Specialized has been crowned the #1 “Drop Bar Bike Brand” in the prestigious Gran Fondo Best Brand Awards for 2023. We innovate for riders, and year after year, our bikes are loved by the most discerning riders. Thank you!

The lightest disc road frame ever: The Specialized Aethos

Product Details

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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 Comp model is no exception.

With low-maintenance, Shimano 105 Di2 electronic shifting and hydraulic disc brakes paired with bomb-proof DT Swiss R470 Disc wheels, you have the perfect steed to excite you out on the road.

  • 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, further saving weight and improving ride characteristics. Everything in pursuit for the perfect ride.

Technical Specifications

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Frameset

Frame

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

Suspension

Fork

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

Brakes

Front Brake

Shimano 105 R7170, hydraulic disc

Rear Brake

Shimano 105 R7170, hydraulic disc

Drivetrain

Shift Levers

Shimano 105 Di2 7170

Front Derailleur

Shimano 105 Di2 7150, braze on

Rear Derailleur

Shimano 105 Di2 7150

Cassette

Shimano 105, 12-speed, 11-34t

Chain

Shimano SLX M7100, 12-speed w/ quick link

Crankset

FC-R7100, 105, 12-Speed, Holllowtech 2

Chainrings

50/34T

Bottom Bracket

Shimano Threaded BSA BB

Wheels & Tires

Front Tire

Turbo Pro, 700x28

Front Wheel

DT R470 Disc

Rear Tire

Turbo Pro, 700x28

Rear Wheel

DT R470 Disc

Inner Tubes

700x20-28, 48mm Presta Valve

Cockpit

Stem

Specialized Pro SL, alloy, 4-bolt

Handlebars

Specialized Shallow Drop, 6061, 70x125mm, 31.8mm clamp

Tape

Supacaz Super Sticky Kush

Saddle

Body Geometry Power Sport, steel rails

SeatPost

Roval Alpinist Carbon Seatpost

Seat Binder

Specialized Alloy, 30mm

Weight

Weight

7.68kg (16 lb, 14.9 oz)

Weight Size

56

* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.

Geometry

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495254565861
Crank Length165mm170mm172.5mm172.5mm175mm175mm
Handlebar Width380mm400mm420mm420mm440mm440mm
Stem Length80mm90mm100mm100mm110mm110mm
Saddle Width155mm155mm143mm143mm143mm143mm
Seatpost Length300mm300mm360mm360mm360mm360mm
Wheelbase973mm975mm978mm991mm1005mm1012mm
Top Tube Length, Horizontal508mm531mm540mm562mm577mm595mm
Bike Standover Height705mm728mm748mm769mm796mm824mm
Seat Tube Length431mm462mm481mm504mm532mm567mm
Seat Tube Angle75.5°74°74°73.5°73.5°73°
Stack514mm527mm544mm565mm591mm612mm
Reach375mm380mm384mm395mm402mm408mm
Head Tube Length109mm120mm137mm157mm184mm204mm
Head Tube Angle71.75°72.5°73°73.5°73.5°74°
BB Height266mm266mm268mm268mm268mm268mm
BB Drop74mm74mm72mm72mm72mm72mm
Trail63mm58mm58mm55mm55mm52mm
Fork Length, Full369mm369mm369mm369mm369mm369mm
Fork Rake/Offset47mm47mm44mm44mm44mm44mm
Front Center574mm577mm579mm591mm606mm613mm
Chainstay Length410mm410mm410mm410mm410mm410mm
Geometry

Rider Reviews

4.3

4 Reviews

 

Good Ride - Bad Paint

I am a loyal Specialized rider/owner. I purchased this model in white about one year ago. It's super lightweight and comfortable. Great in the mountains. However, after about six months I noticed the paint started to chip/fake off in multiple areas on the frame. They are highly noticeable because of the color. The problem has only gotten worse as new chips in the paint have appeared and the existing ones have increased in size. I took it to a local Specialized shop and initiated a warranty claim but was denied because they said it was due to wear and tear. NOT POSSIBLE that all paint defects are due to wear and tear. Disappointed that Specialized paint quality is terrible and will not honor the warranty. Will not purchase another Specialized bike in the future.


Name:
Josef

Helpful?

comfortable RIDE = worth the splurge

+ Roval Rapide CL II wheelset. i upgraded from a Sirrus x 5.0 to the aethos sport + the carbon wheels. The aethos ride is more comfortable then the Sirrus x 5.0 was, + its really lightweight (16lbs), and very responsive. I have only 50 miles on the aethos so far, but i love the ride. I will ride the aethos around the cape cod area/buzzards bay on lots of rough paved roads for 2k+ this season. The di2 is fun, but i have to keep deleting from bluetooth on my iphone to get the etube app to work. The etube ride app works every time.


Name:
mike

Helpful?

Amei!

Já tive Canyon Ultimate e Tarmac SL7 Pro e agora estou amando a minha Aethos!!! A bicicleta flutua nas subidas e me deu muita confiança nas descidas... Ela agarra na curva e faz o que você quer... Sobre andar com ela no plano, eu modifiquei a minha colocando as Rodas Rapide. Ficou perfeita pra mim :)


Name:
Ana P.

Helpful?

Perfect

Perfect

Would Recommend?
Yes!

Name:
Chanda

Helpful?

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