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2021 S-Works Aethos

Shimano Dura-Ace Di2

5

3 Reviews

For once, we’re not in it to win. With Aethos, we stopped worrying about winning,…

Product Details

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For once, we’re not in it to win. With Aethos, we stopped worrying about winning, or the way things are supposed to be done, and instead chased the greatest expression of ride quality ever made. Well, we did it, and in staying true to keeping that promise, we broke every design, ride, and race rule along the way. And we’re not sorry. Aethos: Break the Rules.

Top off the world’s lightest frame with Shimano’s legendary Dura-Ace Di2 groupset and Roval’s featherweight Alpinist wheels and you’re left with a perfectly balanced, top-tier ride that delivers everything in the name of performance.

  • 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

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Frameset

Frame

S-Works Aethos FACT 12r Carbon, Rider First Engineered™, Threaded BB, Electronic cable routing only, 12x142mm thru-axle, flat-mount disc

Seat Binder

Specialized Alloy, 30.0mm, titanium bolt

Suspension

Fork

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

Brakes

Front Brake

Shimano 105, Hydraulic disc

Rear Brake

Shimano 105, Hydraulic disc

Drivetrain

Shift Levers

SRAM Red eTap AXS Hydraulic

Front Derailleur

SRAM RED eTAP AXS, braze-on

Rear Derailleur

SRAM RED eTAP AXS, 12-speed

Cassette

SRAM RED eTAP AXS, 12-speed

Chain

SRAM RED 12-speed

Crankset

SRAM RED AXS Power Meter

Bottom Bracket

Shimano Dura-Ace, BB-R9100

Wheels & Tires

Front Wheel

Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 21h, DT Swiss Aerolite spokes

Front Tire

Turbo Cotton, 320 TPI, 700x26mm

Rear Tire

Turbo Cotton, 320 TPI, 700x26mm

Rear Wheel

Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes

Inner Tubes

Turbo Ultralight, 48mm Presta valve

Cockpit

Stem

S-Works SL, alloy, titanium bolts, 6-degree rise

Handlebars

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

Tape

Supacaz Super Sticky Kush

Saddle

Body Geometry S-Works Power, carbon fiber rails, carbon fiber base

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

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495254565861
Crank Length165mm170mm172.5mm172.5mm175mm175mm
Handlebar Width380mm400mm420mm420mm440mm440mm
Stem Length80mm90mm100mm100mm110mm110mm
Saddle Width155mm155mm143mm143mm143mm143mm
Seatpost Length300mm300mm360mm360mm360mm360mm
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
Wheelbase973mm975mm978mm991mm1005mm1012mm
Top Tube Length, Horizontal508mm531mm540mm562mm577mm595mm
Bike Standover Height705mm728mm748mm769mm796mm824mm
Seat Tube Length431mm462mm481mm504mm532mm567mm
Seat Tube Angle75.5°74°74°73.5°73.5°73°
Geometry

Rider Reviews

5

3 Reviews

 

Pure enjoyment!

Great for any day, it is comfortable, lightweight and most importantly, a real fun ride! You might not be the fastest At TMCR (don’t get me wrong-it’s still a fast bike), but you will enjoy getting there on lumpy roads, as much as you will enjoy charging down the straights!

Would Recommend?
Yes!

Name:
Michael

Helpful?

Ride... not race.

quite possibly the best bike for people like me. a go to bike for almost anything while keeping in mind the most important factor in riding a bike: it should be fun. no time to catch. no other bikes to race. just simply riding ones bike and enjoying it.

Would Recommend?
Yes!

Name:
Brian

Helpful?

Just plain fun

I have churned through a number of bikes trying to find one that had disc brakes, was lightweight for climbing, but I could also ride for 5+ hours. Every other bike compromised one of those items. This is the first bike that does all 3 very well. With disc brakes, barely over 14 pounds for a 58cm frame, and is comfortable enough to ride for a longer ride, it just works and is fun.


Name:
Greg

Helpful?

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