2021 Specialized
Aethos Pro - Ultegra Di2
A carbon frame race bike with high-end components and hydraulic disc brakes.
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Manufacturer Price
$7,800| Frame | Carbon |
|---|---|
| Suspension | Rigid |
| Fork | Carbon |
| Wheels | 700c Carbon |
| Drivetrain | 2 × 11 Electronic |
| Groupset | Ultegra Di2 |
| Brakes | Hydraulic Disc |
For This Bike
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full Aethos model range
View Comparison5'1" – 5'5"
5'3" – 5'7"
5'5" – 5'9"
5'7" – 6'0"
5'10" – 6'2"
6'0" – 6'4"
🐐 Estimated
Dec 2021 · Leon Poultney
We spend time with Specialized's latest lightweight, high-performance road bike that seemingly excels in all areas.
Climbs like a champion
Impossibly light
Stylish
Effortless to ride
The price
Looks better in rowdier colours
Limited wheel options
Lacks aero touches some might demand
Aug 2021 · James Huang
Even an extra 100 g and heavy parts can’t dull this frame's luster.
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.
Heavier than some might like, mediocre (and poorly built) wheelset, almost impossible to get.
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
Light and stiff
Incredible climber
Fantastic handling
Clincher-only wheels
Apr 2021 · Benjamin Topf
Hardly any aerodynamic features, cable integration or even mounting points, other than for two bottles: the list of things that the Specialized S-Works Aethos doesn't have is long. Does this reductionist concept work during the test or does this bike not stand a chance against the competition? Find out here.
Balanced and intuitive handling
Most light-footed and willing acceleration in the test
Minimal weight without the usual disadvantages
High level of comfort
Average efficiency on the flats
Limited mounting point
Apr 2021
It sells for $4,800, but it rides like a million bucks.
Jan 2021 · RBA Staff
The battle to be basic and oh so good
Dec 2020 · Liam Cahill
What a bike. If you have the cash and don't care about aero, buy it
Incredible ride
Low weight
Excellent stiffness
Perfect handling
Gets most of the tech from the S-Works
No power meter
Expensive
Oct 2020
The earth-shatteringly lightweight Specialized Aethos has very quickly added two new models. They’re more affordable, and they’re both still really light. The Aethos Pro and Aethos Expert road bikes share the same new molds and tube shapes, but use a slightly more standard layup to bring prices starting at less than half of the S-Works’ […]
| Frame | Aethos FACT 10r Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc BB Standard: BSA, 68mm, Threaded Color: Satin Blue Murano / Carbon/cobalt |
|---|---|
| Fork | FACT Carbon, 12x100mm thru-axle, flat-mount disc |
| Bottom Bracket | BSA, 68mm, threaded |
| Stem | Specialized Pro SL, alloy, 4-bolt |
| Handlebar | S-Works Short & Shallow |
| Saddle | Body Geometry Power Pro, Hollow Titanium Rails, Carbon Fiber Base |
| Seatpost | Roval Alpinist Carbon Seatpost Type: Rigid |
| Pedals | PEDAL, TEST RIDE PEDALS PROVIDED BY SPECIALIZED |
| Rear Derailleur | Shimano Ultegra Di2 R8050, GS medium cage |
|---|---|
| Front Derailleur | Shimano Ultegra Di2 R8050, braze-on |
| Crank | Shimano Ultegra R8000, HollowTech 2, 11-speed |
| Cassette | Shimano Ultegra R8000, 11-speed, 11-30t |
| Chain | Shimano Ultegra, 11-speed |
| Brakes | Front: Shimano Ultegra R8070, hydraulic disc, Rear: Shimano Ultegra R8070, hydraulic disc Type: Hydraulic Disc |
| Rims | Front: Roval Alpinist CL, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Rear: Roval Alpinist CL, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes |
|---|---|
| Tires | Front: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm, Rear: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm |
Last updated July 2