Specialized

2021 Specialized Aethos Expert

Previous used estimate

$2,464 - $2,535

Actual value depends on condition, size, and local demand.

2021 Specialized Aethos Expert

Value Guide market data · 2021 Specialized Aethos Expert

12-month projected trend

14%

Direction and magnitude, not judgment

vs. category average

1%

Holds value better than category avg

Price over time - 2021 Specialized Aethos Expert

$5.5k$3.2k$911MSRPMSRPYr 1Yr 2Yr 3Yr 4Yr 5Yr 6Yr 7Yr 7Yr 8Yr 9Yr 10Yr 11Yr 12Yr 13Yr 14Yr 14Yr 15Yr 16Yr 17Yr 18Yr 19Yr 20Yr 20

Values based on actual sales data. Enter your bike's specifics to get a precise valuation.

All Aethos model years

Compare Aethos Expert models

1 models

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Overview

About this bike

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.

Specifications

Subtype
Performance
Category
Road
Component Fork
FACT Carbon, 12x100mm thru-axle, flat-mount disc
Component Size
49cm, 52cm, 54cm, 56cm, 58cm, 61cm
Component Stem
Specialized Pro SL, alloy, 4-bolt
Product Family
Aethos
Component Chain
Shimano Ultegra, 11-speed
Component Color
Gloss Ice Blue/Teal Tint/Flake Silver, Satin Red Tint/Dream Silver
Component Frame
Aethos FACT 10r Carbon, Rider First Engineered, Threaded BB, 12x142mm thru-axle, flat-mount disc
Component Brakes
Shimano Ultegra R8070, hydraulic disc
Component Pedals
Sold separately
Component Saddle
Body Geometry Power Expert, Hollow Titanium Rails
Component Crankset
Shimano Ultegra R8000, HollowTech 2, 11-speed
Component Shifters
Shimano Ultegra Di2 Disc R8070
Component Handlebar
Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
Component Seat Post
Roval Alpinist Carbon Seatpost
Component Front Tire
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700c x 26
Component Tape Grips
Supacaz Super Sticky Kush
Component Rear Derailleur
Shimano Ultegra Di2 R8050, GS medium cage
Component Front Derailleur
Shimano Ultegra Di2 R8050, braze-on
Crankset
Shimano Ultegra R8000, HollowTech 2, 11-speed
Pedals
Sold separately
Chain
Shimano Ultegra, 11-speed
Saddle
Body Geometry Power Expert, Hollow Titanium Rails
Handlebar
Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
Front Derailleur
Shimano Ultegra Di2 R8050, braze-on
Rear Derailleur
Shimano Ultegra Di2 R8050, GS medium cage
Stem
Specialized Pro SL, alloy, 4-bolt
Brakes
Shimano Ultegra R8070, hydraulic disc
Fork
FACT Carbon, 12x100mm thru-axle, flat-mount disc
Frame
Aethos FACT 10r Carbon, Rider First Engineered, Threaded BB, 12x142mm thru-axle, flat-mount disc
Seat Post
Roval Alpinist Carbon Seatpost
Shifters
Shimano Ultegra Di2 Disc R8070
Tape/Grips
Supacaz Super Sticky Kush
Color
Satin Red Tint/Dream Silver
Size
61cm
Front Tire
S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700c x 26

What to check when buying used

Inspection

Frame condition

Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.

Inspection

Drivetrain wear

Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.

Inspection

Service history

Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.

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