2024 Specialized

Aethos Comp - Shimano 105 Di2

A carbon frame race bike with upper mid-range components and hydraulic disc brakes.
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Manufacturer Price

$4,500
Weight16.5 lbs  
FrameCarbon
SuspensionRigid
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 12 Electronic
Groupset105 Di2
BrakesHydraulic Disc
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Top Comparison
Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
Aethos Comp - Shimano 105 Di2
Other Race bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

39 mph

Aethos Comp - Shimano 105 Di2

40 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Aethos model range

View Comparison
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
Price History
Reviews
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

Read Review

Bikerumor
Specialized S-Works Aethos LTD in Italian Marble with Campy Super Record Wireless

Oct 2023 · Cory Benson

Specialized celebrates 50 yrs since Mike Sinyard’s pilgrimage to Italy with limited edition S-Works Aethos LTD road bike built with Campy & faux marble…

Read Review

Gran Fondo Magazine
The Specialized Aethos Expert all-road bike in review

Aug 2022 · By

Our test team’s expectations of the Specialized Aethos Expert were very high. After all, the Specialized S-Works Aethos won our previous road bike group test by a large margin, albeit with a few upgrades. We put the stock Expert model featuring ULTEGRA Di2 components and a classic two-piece cockpit to the test to see if this model can fare just as well as an all-road bike, comparing it to six of this year’s best all-road models.

Highs
  • First-class handling

  • Quick acceleration

  • Pleasant level of vibration damping

  • Lots of all-round potential with the right upgrades

Lows
  • Tires are too skinny and offer limited reserves

  • Lack of integration

Read Review

The Gear Loop
Specialized S-Works Aethos review

Dec 2021 · Leon Poultney

We spend time with Specialized's latest lightweight, high-performance road bike that seemingly excels in all areas.

Highs
  • Climbs like a champion

  • Impossibly light

  • Stylish

  • Effortless to ride

Lows
  • The price

  • Looks better in rowdier colours

  • Limited wheel options

  • Lacks aero touches some might demand

Read Review

BikeRadar
Specialized Aethos Comp review

Nov 2021 · Warren Rossiter

If you want one of the lightest frames around but don’t want to shout about it, the Aethos is a canny buy

Highs
  • Lightning-fast handling

  • Understated looks

  • Flyweight frame

Lows
  • Wheelset and tyres limit the potential of the frame

Read Review

Cycling Tips
Specialized Aethos Comp review: More affordable, more weight, still magical - CyclingTips

Aug 2021 · James Huang

Even an extra 100 g and heavy parts can’t dull this frame's luster.

Highs
  • Superb chassis efficiency and handling, excellent ride quality, generous tire clearance, classically understated aesthetics, headache-free cable routing, proprietary (almost) nothing, SRAM Rival AXS works just as well as Red and Force.

Lows
  • Heavier than some might like, mediocre (and poorly built) wheelset, almost impossible to get.

Read Review

Cyclist
Specialized S-Works Aethos review

May 2021 · James Spender

The Aethos is virtually the perfect bike, from its razor handling to incredible climbing. If only it had tubeless wheels and cost a bit less

Highs
  • Light and stiff

  • Incredible climber

  • Fantastic handling

Lows
  • Clincher-only wheels

Read Review

Bicycling
Specialized’s Aethos Comp Rival eTap AXS Is So Good, It’ll Scramble Your Brain

Apr 2021

It sells for $4,800, but it rides like a million bucks.

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

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

BB StandardBSA, 68mm, Threaded

ColorsGloss Metallic Pine Green Smoke; Gloss Dune White Metallic Spruce

Fork

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

Bottom Bracket

Shimano Threaded BSA BB

Stem

Specialized Pro SL, alloy, 4-bolt

Handlebar

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

Saddle

Body Geometry Power Sport, steel rails

Seatpost

Roval Alpinist Carbon Seatpost

TypeRigid

Groupset
Rear Derailleur

Shimano 105 Di2 7150

Front Derailleur

Shimano 105 Di2 7150, braze on

Crank

FC-R7100, 105, 12-Speed, Holllowtech 2, 50/34T

Shifters

Shimano 105 Di2 7170

Cassette

Shimano 105, 12-speed, 11-34t

Chain

Shimano SLX M7100, 12-speed w/ quick link

Brakes

Front: Shimano 105, Hydraulic disc, Rear: Shimano 105 R7170, hydraulic disc

TypeHydraulic Disc

Wheels
Rims

Front: DT R470 Disc, Rear: DT R470 Disc

Tires

Front: Turbo Pro, 700x28, Rear: Turbo Pro, 700x28

Rider Notes
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Last updated June 1