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2024 Specialized

Aethos Frameset

A carbon frame race frameset.

Manufacturer Price

$2,999
Weight3.0 lbs (frame)  
FrameCarbon
ForkCarbon
Wheels700c
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Insights
Sizing
49cm

5'1" – 5'5"

52cm

5'3" – 5'7"

54cm

5'5" – 5'9"

56cm

5'7" – 6'0"

58cm

5'10" – 6'2"

61cm

6'0" – 6'4"

🐐 Estimated

Rider Fit Notes
  • 5'11", size 56cm, Just right
  • 6'1", size 61cm, Just right
Reviews

Summary

The Specialized Aethos is celebrated for its exceptionally lightweight frame and superb ride quality, offering a balanced and responsive experience that excels in climbing and handling. Its understated aesthetics and efficient chassis make it a standout in the race category, though some note limitations in wheel options and aerodynamics. Overall, it delivers a remarkable ride that prioritizes comfort and performance without excessive flair.

Pros
  • Exceptionally lightweight frame

  • Superb ride quality and handling

  • Understated aesthetics

  • Excellent climbing performance

  • Generous tire clearance

Cons
  • Limited wheel options

  • Lacks aero features

  • High price

  • Skittish on descents in some models

Key Quotes
The Aethos Comp, however, is much better when it comes to descending – the chassis is more composed and the front end transmits much less buzz, even with an alloy bar, budget wheels and skinny tyres.
BikeRadar logoBikeRadar
The Aethos is one of the finest-riding road frames I’ve ever experienced.
Cycling Tips logoCycling Tips
What a bike! If you have the cash and don't care about aero, buy it.
road.cc logoroad.cc
the Specialized Aethos is excellent, offers a truly remarkable ride and it doesn't like to shout about it
The Gear Loop

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Bicycling
Specialized Aethos 2 Stuns as Lightest Frame Again. The Latest Features Make It Even Better.

Oct 2025

Specialized’s Aethos 2 returns as the world’s lightest road frame, now with new upgrades that boost comfort, fit, and versatility for every cyclist.

Read Review

Bikerumor
Specialized Launches Aethos 2: The Everyday Superbike Gets a Refined Evolution

Oct 2025 · Jordan Villella

Get your wallet ready, the new Specialized Aethos 2 just dropped and it looks like more of the classic looks with some performance tweaks.

Read Review

Cycling News
New Specialized Aethos 2 review: The bike it should have been all along, but not everyone will be happy

Oct 2025

Still a featherweight, but now with relaxed geometry, internally routed cables, and premium builds only

Highs
  • Incredibly lightweight

  • Super nimble and fun to ride

  • Looks fantastic

Lows
  • Off-the-shelf tyre size is narrow, considering the clearance

  • Forced cockpit width is a headache customers shouldn't have to deal with

  • The Crux offers the same ride characteristics with more versatility

Read Review

Cyclist
Specialized S-Works Aethos 2 review: First ride on the brand’s updated climbing bike

Oct 2025 · Aaron Borrill

When Specialized unveiled the first-generation Aethos in 2020, it was an instant hit, perhaps only drawing flak from the rim-brake

Highs
  • Great ride quality

  • New geometry adds stability

  • 35mm tyre clearance

  • Front-end integration

  • Still very light

Lows
  • Expensive in S-Works guise

  • Non-aero

  • Limited range depth

Read Review

Escape Collective
Believe it or not … that is the new Specialized Aethos

Oct 2025 · Ronan Mc Laughlin

Specialized solves one pain point but makes a new one, as the second-generation Aethos adds weight but still clings to the “lightest road bike” crown.

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Gran Fondo Magazine
The Return of a Purist? New Specialized S-Works Aethos 2 Review

Oct 2025 · Jan Fock

New 2026 Specialized S-Works Aethos First Ride Test – Lighter, Cleaner, Pure Riding Fun?

Highs
  • Explosive acceleration

  • Agile, direct handling

  • More versatile thanks to increased tyre clearance

  • Classic, beautiful frame design with subtle S-Works branding

Lows
  • A little twitchy at high speeds

  • Wide handlebar feels too relaxed for narrower riders

Read Review

Velo
The Specialized S-Works Aethos Is Still Worth the Hype – Field Test

Jun 2025 · Josh Ross

Not an all-road and verging on relic status, but the passion behind Specialized S-Works Aethos continues to keep it relevant.

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road.cc
Tartan paint? Check out the very special Specialized S-Works Aethos that’s being ridden from Edinburgh to Rome this week

Mar 2024 · Mat Brett

Spoon Customs has created a stunning finish for a bike that’s being used to raise funds for the fight against motor neurone disease

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Geometry
Specs
Build
Frame

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

BB StandardBSA, 68mm, Threaded

ColorSatin Carbon + 50% Silver Blue Viavi / 10% Fog Tint

Fork

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

Bottom Bracket

BSA, 68mm, threaded

Seatpost

Roval Alpinist Carbon Seatpost

TypeRigid

Rider Notes
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First added October 4

Last updated April 12

Not listed for 417 days