2026
Aethos 2 Expert
The 2026 Specialized Aethos 2 Expert is a road bike offered in 6 sizes, 49 to 61. Reach runs from 373 to 404 mm and stack from 522 to 627 mm. It ships with Shimano Ultegra R8150 Di2 and Roval C38.
Every number on this page was confirmed by at least two independent sources. Where a figure is not verified, the cell says so instead of guessing. Verified against specialized.com and at least one independent source. Last checked .
Key facts
- Brand
- Specialized
- Model
- Aethos 2
- Model year
- 2026
- Frame
- Expert
- Type
- Road
- Sizes
- 49, 52, 54, 56, 58, and 61
- Verified measurements
- 65 of 66
- Verified against
- specialized.com and at least one independent source
- Last checked
Geometry by size
Millimeters unless the row says degrees. Scroll sideways for the larger sizes.
| Measurement | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Reach(mm) | 373mm | 377mm | 384mm | 391mm | 398mm | 404mm |
| Stack(mm) | 522mm | 538mm | 559mm | 580mm | 606mm | 627mm |
| Head tube angle(°) | 71.4° | 72.1° | 72.5° | 73° | 73° | 73.5° |
| Seat tube angle(°) | 75.5° | 74.5° | 74° | 74° | 74° | 74° |
| Effective top tube(mm) | 508mm | 526mm | 544mm | 557mm | 572mm | 584mm |
| Chainstay length(mm) | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm |
| Wheelbase(mm) | 978mm | 981mm | 992mm | 998mm | 1013mm | 1020mm |
| BB drop(mm) | not yet verified | 76.5mm | 75mm | 75mm | 73.5mm | 73.5mm |
| Standover(mm) | 719mm | 737mm | 759mm | 779mm | 805mm | 834mm |
| Seat tube length(mm) | 450mm | 470mm | 490mm | 510mm | 535mm | 570mm |
| Head tube length(mm) | 114mm | 128mm | 150mm | 169mm | 198mm | 218mm |
65 of 66 measurements verified.✓Verified, two or more sources agree Not yet verified
2026 Specialized Aethos 2 Expert drawn to scale
Stock build
21 partsManufacturer specs are labeled; checkmarks mean two or more sources agree.
Frame
Specialized FACT Aethos 2 10r
Suspension
Specialized FACT Aethos 2 10r Carbon
Drivetrain
Shimano Ultegra R8170 Di2
Shimano Ultegra R8150 Di2
Shimano Ultegra R8150 Di2
Shimano Ultegra
Shimano XT M8100
Shimano Ultegra R8100
Shimano Ultegra R8100
SRAM 35
SRAM DUB
Wheels & Tires
Roval C38
Specialized S-Works Turbo
Brakes
Shimano Ultegra R8170
Shimano Ultegra
Shimano Ultegra
Cockpit
Roval Alpinist
Specialized Pro SL
Supacaz Super Sticky Kush
Seatpost & Saddle
Roval Alpinist
Specialized Body Geometry Power Expert
Quick answers
- What sizes does the 2026 Specialized Aethos 2 Expert come in?
- It comes in 6 sizes: 49, 52, 54, 56, 58, and 61.
- What are the reach and stack of the 2026 Specialized Aethos 2 Expert in size 56?
- In size 56, reach is 391 mm and stack is 580 mm.
- What is the head tube angle of the 2026 Specialized Aethos 2 Expert?
- The head tube angle is 73 degrees in size 56.
- What does the 2026 Specialized Aethos 2 Expert ship with?
- The stock build includes Specialized FACT Aethos 2 10r, Specialized FACT Aethos 2 10r Carbon, Shimano Ultegra R8170 Di2, and Roval C38.
- Which years of the Specialized Aethos 2 are on Quiver?
- Quiver has the Specialized Aethos 2 for 2026 and 2025.
Ride a Aethos 2? Keep it in Quiver.
Add this bike and it arrives with its geometry and stock parts already filled in. Swap parts as you change them and the build sheet stays true.
Add this bike to my garage Free. Opens Quiver if you have it, or the App Store if you don't.