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Specialized S-Works Aethos Frameset

  • Weighing just 585grams, Specialized's brand new Aethos breaks the rules for a new breed of bike
  • Designed to capture riding in it's purest form & allow you to ride just for the love of riding
  • Created for swift and agile handling along with a perfectly balanced front and rear stiffness
  • Featuring an S-Works Aethos FACT 12r Carbon layup provides a reliable & rigid lightweight base

Was: £4,500

Now: £3,749



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Not available to buy from outside the EU This item is NOT available outside the EU



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Specialized S-Works Aethos Frameset

Specialized's newest and maybe just most dreamy creation yet brings a new type of bike with a very different goal to the world of cycling: meet the Aethos, the world's lightest frame. The Aethos has been designed to take you to a different world of which the idea of riding on clouds no longer seems so far fetched. When Specialized created the Aethos, they took a different approach when desgining the aims of their latest S-Works, one that acknowledged that all of us in the cycling world have a natural draw, a raw drive towards racing, going head to head be that in the Grand Tours or the weekend's local hill climb, it's why we push ourselves to be stronger, faster, better than ever before. But it's not why we started riding. The Aethos grounds you, it brings you back to your roots, allowing you to experience the euphoria of riding simply beacuse you love riding once again. It's the purest form of cycling and all it took was the simple idea of throwing away the rule book, removing the need to conform to the UCI's rules and regulations, the simplicity of freedom. Specialized's Aethos features an S-Works Aethos FACT 12r Carbon layup that provides a reliable and rigid lightweight base to work from, weighing a mere 585 grams so that you can fly up those climbs and into the clouds whilst maintaing high performing handling for an equally astonishing descent. No minor detail was left when Specialized created the Aethos, every single part was measured against sheer perfection until the Aethos was born.


Full Specification



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, Specialized has 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 Specialized has 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.


Ride Quality 

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.



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

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

Seatpost - Roval Alpinist Carbon Seatpost

Seat Binder - Specialized Alloy, 30.0mm, titanium bolt