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Aethos Comp - Shimano 105 Di2

2 Reviews

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

The lightest disc road frame ever: The Specialized Aethos

Product Details

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

Frameset

Frame

Aethos FACT 9R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc

Suspension

Fork

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

Cockpit

Handlebars

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

Stem

Specialized Pro SL, alloy, 4-bolt

Tape

Roubaix S-Wrap

Saddle

Body Geometry Power Sport, steel rails

SeatPost

Roval Alpinist Carbon Seatpost

Seat Binder

Shimano 105 R7170, hydraulic disc

Brakes

Front Brake

Shimano 105, 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 Wheel

DT R470 Disc

Rear Wheel

DT R470 Disc

Front Tire

Turbo Pro, 700x28

Rear Tire

Turbo Pro, 700x28

Inner Tubes

Presta Valve Standard, 48mm valves

Weight

7.5 kg (16 lb, 8.6 oz)

Weight Size

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

Geometry

	49	52	54	56	58	61
Crank Length	165mm	170mm	172.5mm	172.5mm	175mm	175mm
Handlebar Width	380mm	400mm	420mm	420mm	440mm	440mm
Stem Length	80mm	90mm	100mm	100mm	110mm	110mm
Saddle Width	155mm	155mm	143mm	143mm	143mm	143mm
Seatpost Length	300mm	300mm	360mm	360mm	360mm	360mm
Reach	375mm	380mm	384mm	395mm	402mm	408mm
Head Tube Angle	71.75°	72.5°	73°	73.5°	73.5°	74°
Chainstay Length	410mm	410mm	410mm	410mm	410mm	410mm
Top Tube Length, Horizontal	508mm	531mm	540mm	562mm	577mm	595mm
Seat Tube Angle	75.5°	74°	74°	73.5°	73.5°	73°
Stack	514mm	527mm	544mm	565mm	591mm	612mm
Seat Tube Length	431mm	462mm	481mm	504mm	532mm	567mm
BB Drop	74mm	74mm	72mm	72mm	72mm	72mm
Bike Standover Height	705mm	728mm	748mm	769mm	796mm	824mm
Trail	63mm	58mm	58mm	55mm	55mm	52mm
Fork Length, Full	369mm	369mm	369mm	369mm	369mm	369mm
Head Tube Length	109mm	120mm	137mm	157mm	184mm	204mm
BB Height	266mm	266mm	268mm	268mm	268mm	268mm
Fork Rake/Offset	47mm	47mm	44mm	44mm	44mm	44mm
Front Center	574mm	577mm	579mm	591mm	606mm	613mm
Wheelbase	973mm	975mm	978mm	991mm	1005mm	1012mm

Manual Downloads

2021 Aethos User Manual

Specialized Bicycle Owner's Manual (All Languages)

2022 Rider/Bike Weight Limits and Terrain Conditions

Trainer Usage Addendum to the Bicycle Owner's Manual

Rider Reviews

2 Reviews

07/26/2024

Super nice for an old man with great legs 50+ miles a week

Takes one finger to lift. 18 lbs on the scale without pedals. Just purchased but have 150+ miles on it. Added glued on tires to cut down on flats. Purchased a new pump to keep better inflation. Tested 5 other bikes before this one--and stopped after the first lift. Still getting used to the electronic shifters. Looking forward to a softer seat. But I recommend that you give this sweet bike a ride. Favorable to my Cannondales: CAAD10 and CX10 and Criterium.

Name:: Scott

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04/30/2024

Best Bike I've Owned

I wanted to upgrade from my 08' Tarmac and debated the new Tarmac or the Aethos for almost a year. I'm nearly 50, but still love fast race bikes, but i dont want my fillings to raddle out of my teeth. In the end, the Aethos reviews commonly state how fun the Aethos is, so I chose the Aethos and I am so glad I did. This is a very fast bike, it rolls with ease and loves it when you get out of the saddle, and bombs descents with rock-solid stability. The part that amazes me the most is how comfortable it is to ride. It eats road vibration, but doesn't feel disconnected or sluggish. How did they do that? I don't know, but I'm glad they did. I've only put about 300 miles of cold winter riding on this bike, but on every ride thus far, I've caught myself smiling and laughing at each new revelation about the Aethos. It is fast, comfortable and fun. Plain and simple. I got the entry level Aethos Comp - Shimano 105 Di2 and am very happy with the bike and components

Name:: Ken

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