2021
2021 Specialized Aethos Pro
The 2021 Specialized Aethos Pro sits more aggressive than most road bikes. Reach 375 to 408 mm, stack 514 to 612 mm. The Aethos Pro build comes with SRAM Force eTAP AXS shifting and Roval Alpinist CL wheels.
Source: specialized.com. Checked .
Key facts
- Brand
- Specialized
- Model
- Aethos
- Model year
- 2021
- Frame
- Pro
- Type
- Road
- Geometry labels
- 49, 52, 54, 56, 58, and 61
- Drivetrain
- SRAM Force eTAP AXS
- Wheels
- Roval Alpinist CL
- Geometry
- Complete for every size
- Source
- specialized.com
- Checked
Geometry by size
| Measurement | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Reach(mm) | 375 | 380 | 384 | 395 | 402 | 408 |
| Stack(mm) | 514 | 527 | 544 | 565 | 591 | 612 |
| Head tube angle(°) | 71.75 | 72.5 | 73 | 73.5 | 73.5 | 74 |
| Seat tube angle(°) | 75.5 | 74 | 74 | 73.5 | 73.5 | 73 |
| Chainstay length(mm) | 410 | 410 | 410 | 410 | 410 | 410 |
| Wheelbase(mm) | 973 | 975 | 978 | 991 | 1005 | 1012 |
| BB drop(mm) | 74 | 74 | 72 | 72 | 72 | 72 |
| BB height(mm) | 266 | 266 | 268 | 268 | 268 | 268 |
| Standover(mm) | 705 | 728 | 748 | 769 | 796 | 824 |
| Seat tube length(mm) | 431 | 462 | 481 | 504 | 532 | 567 |
| Fork length(mm) | 369 | 369 | 369 | 369 | 369 | 369 |
| Head tube length(mm) | 109 | 120 | 137 | 157 | 184 | 204 |
Stock build
11 parts
Frame
Drivetrain
Wheels & Tires
Brakes
Seatpost & Saddle
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Quick answers
- Which size or configuration labels have geometry for the 2021 Specialized Aethos Pro?
- Geometry is listed for 49, 52, 54, 56, 58, and 61.
- What are the reach and stack of the 2021 Specialized Aethos Pro in size 56?
- In size 56, reach is 395 mm and stack is 565 mm.
- What is the head tube angle of the 2021 Specialized Aethos Pro?
- The head tube angle is 73.5 degrees in size 56.
- What does the 2021 Specialized Aethos Pro ship with?
- The stock build includes Specialized Aethos FACT, SRAM Force eTAP AXS, Roval Alpinist CL, and SRAM Force eTAP.
- Which years of the Specialized Aethos are on Quiver?
- Quiver has the Specialized Aethos for 2021, 2025, 2024, 2023, and 2022.
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