Aethos 2 Pro
OverviewAbout the Specialized Aethos 2 Pro
The Specialized Aethos 2 Pro is a road bike, built on a carbon frame, listed at $12,000. A drop-bar bike built for sealed roads, speed and distance.
SizingWhat size Aethos 2 Pro do I need?
Enter your height to see the size Specialized recommends.
| Size | Rider height | In feet |
|---|---|---|
| 49 | 155 to 163 cm | 5 ft 1 in to 5 ft 4 in |
| 52 | 163 to 170 cm | 5 ft 4 in to 5 ft 7 in |
| 54 | 170 to 175 cm | 5 ft 7 in to 5 ft 9 in |
| 56 | 175 to 180 cm | 5 ft 9 in to 5 ft 11 in |
| 58 | 180 to 188 cm | 5 ft 11 in to 6 ft 2 in |
| 61 | 188 to 196 cm | 6 ft 2 in to 6 ft 5 in |
Rider heights from Specialized's size chart. Height is a starting point: arm and leg length, flexibility and riding style all matter, so a test ride beats any chart. How bike sizing works.
SpecificationsWhat we know
- Brand
- Specialized
- Model year
- 2026
- Category
- Road
- Frame
- Carbon
- Wheel size
- 700c
- Brakes
- Disc
- Frame sizes
- 49, 52, 54, 56, 58, 61
- Price
- $12,000, RRP AUD (Specialized Australia, checked 24 Sep 2026)
Specs and pricing are listed in AUD and sourced from Australian retail listings. Confirm the current details and availability with the seller before purchase.
GeometrySize 56
- Stack
- 580 mm
- Reach
- 391 mm
- Stack/reach
- 1.48
- Head angle
- 73 deg
- Seat angle
- 74 deg
- Wheelbase
- 998 mm
- Chainstay
- 410 mm
- BB drop
- 75 mm
GearingRatios
Ratios are derived from the chainrings and cassette. They describe the gearing, not any rider's ability.
Drivetrain & buildFull specification
- Groupset
- Shimano Ultegra Di2 R8170
- Shifting
- Electronic
- Drive
- 2x
- Speeds
- 12
- Crank
- Shimano Ultegra R8100 with power meter
- Chainrings
- 52/36
- Cassette
- Shimano Ultegra R8100, 12-speed
- Rear derailleur
- Shimano Ultegra Di2 R8150
- Brakes
- Shimano Ultegra R8170 hydraulic disc
- Rotors
- 160/140mm
- Wheelset
- Roval Alpinist CL II
- Rim internal width
- 21 mm
- Stock tyre
- 700x28c
- Max tyre clearance
- 32 mm
- Tubeless
- Yes
- Fork material
- FACT carbon
- BB standard
- threaded
- Thru-axle
- 100x12mm front, 142x12mm rear
- Seatpost
- Roval Alpinist carbon
- Cockpit
- Roval Alpinist integrated bar and stem
- Saddle
- Power Pro
Bike DNAWhat the numbers say
- Position
- Stack-to-reach 1.48 gives a balanced, endurance riding position.
- Steering
- A 73 deg head angle points to balanced steering.
- Climbing
- Lowest ratio 1.2 is endurance-friendly gearing.
Derived from the published geometry and gearing above. It describes the numbers, not a ride test.
BikeFinder Data Profile: geometry and specification researched from published sources (specialized.com + granfondo review + backfill 2026-09-27: excelsports.com), verified 2026-09-04. This is a specification analysis, not a physical ride review.
Where to buyStockist
BikeFinder is an independent directory. We link to retailers; the price shown is last seen and set by the seller.
