2021

Specialized Aethos Expert

Name: 2021 Specialized Aethos Expert
Brand: Specialized

General Endurance

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Colour / Gloss Ice Blue/Teal Tint/Flake Silver, Satin Red Tint/Dream Silver

Size / 49cm, 52cm, 54cm, 56cm, 58cm, 61cm

At a glance

The 2021 Specialized Aethos Expert is a General and Endurance carbon road bike. It is priced at $5,500 USD, comes in a range of sizes, including 49cm, 52cm, 54cm, 56cm, 58cm, 61cm and a shimano drivetrain. The bike is part of Specialized's Aethos Expert range of road bikes.

- What if we used every ounce of experience we’ve gained serving riders over the past 46 years and built a bike made simply for the love of riding? The Aethos is designed to straddle the line between perfect ride quality, extreme lightweight, and undeniable style. The Aethos Expert model is no exception.

- 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.

- Every detail, from the derailleur hangers to the fork expander plug have been designed with style, weight, and durability in mind—everything in pursuit of the perfect ride.

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Where To Buy

Specialized

Specialized Aethos Expert

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Reviews

Specifications

Frameset

Frame

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

Wheels

Tires

[F] S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700c x 26

Drivetrain

Chain

Shimano Ultegra, 11-speed
Crank

Shimano Ultegra R8000, HollowTech 2, 11-speed
Front Derailleur

Shimano Ultegra Di2 R8050, braze-on
Rear Derailleur

Shimano Ultegra Di2 R8050, GS medium cage
Shifters

Shimano Ultegra Di2 Disc R8070

Components

Brakeset

Shimano Ultegra R8070, hydraulic disc
Handlebar

Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
Saddle

Body Geometry Power Expert, Hollow Titanium Rails
Seatpost

Roval Alpinist Carbon Seatpost
Stem

Specialized Pro SL, alloy, 4-bolt
Grips

Supacaz Super Sticky Kush

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FAQ

Q: How much is a 2021 Specialized Aethos Expert?

A 2021 Specialized Aethos Expert is typically priced around $5,500 USD when new. Be sure to shop around for the best price, and also look to the used market for a great deal.

Q: What size 2021 Specialized Aethos Expert should I get?

The 2021 Specialized Aethos Expert comes in sizes 49cm, 52cm, 54cm, 56cm, 58cm, 61cm. After measuring your height, use the size chart below to find the typical Specialized Aethos Expert size for your height. Remember that these sizes are a general guide and bike sizes can vary between riders and bikes. The best way to find your size is to go for a test ride.

Rider Height (cm)	Rider Height (in)	Frame Size
148cm - 158cm	4'10" - 5'2"	XS
158cm - 168cm	5'2" - 5'6"	S
168cm - 178cm	5'6" - 5' 10"	M
178cm - 185cm	5'10" - 6'1"	L
185cm - 193cm	6'1" - 6'4"	XL
193cm - 198cm	6'4" - 6'6"	XXL

Endurance

General

Gravel

Touring

Triathlon

Cyclocross