Pinch to Zoom

Rotate screen for larger image

2021 Aethos Pro

SRAM Force eTap AXS

$7,800

4 Reviews

The Aethos line promises three things: unprecedented weight savings, perfectly-balanced…

Product Details

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.
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.
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.
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.

Technical Specifications

Frameset

Frame

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

Seat Binder

Specialized Alloy, 30.0mm

Suspension

Fork

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

Brakes

Front Brake

SRAM Force eTAP, hydraulic disc

Rear Brake

SRAM Force eTAP, hydraulic disc

Drivetrain

Front Derailleur

SRAM Force eTAP AXS, braze-on

Rear Derailleur

SRAM Force eTAP AXS, 12-speed

Cassette

SRAM CS XG 1270, 12-speed, 10-33t

Chain

SRAM CN Force 12-speed

Crankset

SRAM FC Force DUB, 12-speed

Bottom Bracket

SRAM DUB BSA 68

Wheels & Tires

Front Wheel

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

Front Tire

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

Rear Tire

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

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

Cockpit

Stem

Specialized Pro SL, alloy, 4-bolt

Handlebars

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

Tape

Supacaz Super Sticky Kush

Saddle

Body Geometry Power Pro, hollow titanium rails

SeatPost

Roval Alpinist Carbon Seatpost

* 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

	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
Stack	514mm	527mm	544mm	565mm	591mm	612mm
Reach	375mm	380mm	384mm	395mm	402mm	408mm
Head Tube Length	109mm	120mm	137mm	157mm	184mm	204mm
Head Tube Angle	71.75°	72.5°	73°	73.5°	73.5°	74°
BB Height	266mm	266mm	268mm	268mm	268mm	268mm
BB Drop	74mm	74mm	72mm	72mm	72mm	72mm
Trail	63mm	58mm	58mm	55mm	55mm	52mm
Fork Length, Full	369mm	369mm	369mm	369mm	369mm	369mm
Fork Rake/Offset	47mm	47mm	44mm	44mm	44mm	44mm
Front Center	574mm	577mm	579mm	591mm	606mm	613mm
Chainstay Length	410mm	410mm	410mm	410mm	410mm	410mm
Wheelbase	973mm	975mm	978mm	991mm	1005mm	1012mm
Top Tube Length, Horizontal	508mm	531mm	540mm	562mm	577mm	595mm
Bike Standover Height	705mm	728mm	748mm	769mm	796mm	824mm
Seat Tube Length	431mm	462mm	481mm	504mm	532mm	567mm
Seat Tube Angle	75.5°	74°	74°	73.5°	73.5°	73°

Manual Downloads

2021 Aethos User Manual

Specialized Bicycle Owner's Manual (All Languages)

Trainer Usage Addendum to the Bicycle Owner's Manual

Rider Reviews

4 Reviews

01/26/2021

Quickly Forgot What I Paid!

Bought the Aethos Pro, said no to the blush color 10 times, and then bought it anyways. Now I love it. This bike is like cheating!! It flies, it never seems to wear me out. Super smooth, fun, and has plenty of aerodynamics. The SRAMs are perfect for this bike. After a month I still have a smile on my face every single time. Think I may keep this bike for a long time. Sorry Specialized, it may be a while before my next purchase.

Name:: Acegx

Helpful?

11/23/2020

Specialized does it again

Just a week (and four rides) into the Aethos Pro but I can truly say I think Specialized has hit the mark again - at least for me. I've got a few older S-Works road bikes but admit I couldn't get over the 5 figure hump for an Aethos S-Works. But the Pro is everything I wanted. Compared to even my 2011 Roubaix, it is lighter and significantly more ""sprightly."" It's the best climbing bike I have ever ridden but is also plenty fast - particularly for quick punches. Still at almost 60 years old, I wanted a bike for what I call ""smell the roses"" rides and that is exactly what I think Specialized had in mind. Well done.

Name:: Slow C.

Helpful?

11/15/2020

This bike makes me think about riding all the time

I picked this bike up from my local Specialized dealer about three weeks ago. I went in expecting to leave with a Tarmac SL7 but after talking to the sales guy he convinced me to take a demo ride...glad I did! Coming from a really firm Spanish climbing bike, the ride profile is night and day different in a great way. The handling and compliance make riding an effortless experience and the Roval Alpinist CL wheels compliment accordingly. The SRAM groupset and Alpinist cockpit are also solid. If I had to knit-pick one or two things it would be the lack of an included power meter and the Murano blue finish...it is good but not great. If you want a bike that is fun and has you wanting more, look no further.

Name:: Hazy D.

Helpful?

11/06/2020

A great bike. You won't be disappointed

I 've got over 200 miles on this bike in the first week. It's a joy to ride and is easily the most enjoyable responsive light nimble bike I've ever ridden. I was a little reluctant to order this online without a test ride. It matched nearly matched the dimensions of my 2012 Roubaix Pro so I made the plunge. The SRAM Force Etap AXS shifts flawlessly and I love the broad yet close selection of gears. I was happy to see it came with a 10x33 cassette instead of the advertised 10x28. The wheels are incredibly light contribute to a ride that accelerates, corners, and tracks effortlessly. The big cost savings from the $12,000 S-Works model was certainly worth the small weight penalty and down the line will make repairs a bit cheaper and perhaps a bit more durability. I black color with the iridescent blue front fork is understated and allows you to fly below the radar a bit and has a raw carbon finish that suits me. It has a race bike responsiveness but isn't twitchy and I wouldn't hesitate to do a century on it. It certainly isn't as compliant as my Roubaix but it feels so fast that you just want to hammer on it for the pure joy it solicits. I also appreciate the lifetime guarantee on the frame and wheels. I tend to keep my bikes for a long time so it is comforting to know the manufacture stands behind their product.

Name:: Weedhooper

Helpful?