2025
2025 Specialized Aethos Pro Shimano
The 2025 Specialized Aethos Pro Shimano sits more aggressive than most road bikes. Reach 375 to 408 mm, stack 514 to 612 mm. The Aethos Pro - Shimano Ultegra Di2 build comes with Shimano Ultegra R8150 Di2 shifting and Roval Alpinist CL II wheels.
Source: specialized.com. Checked .
Key facts
- Brand
- Specialized
- Model
- Aethos
- Model year
- 2025
- Frame
- Pro Shimano
- Type
- Road
- Geometry labels
- 49, 52, 54, 56, 58, and 61
- Drivetrain
- Shimano Ultegra R8150 Di2
- Wheels
- Roval Alpinist CL II
- 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 |
| Effective top tube(mm) | 508 | 531 | 540 | 562 | 577 | 595 |
| 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
Specialized Aethos FACT
Drivetrain
Shimano Ultegra
Shimano XT M8100
Wheels & Tires
Brakes
Shimano Ultegra R8170
Seatpost & Saddle
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Quick answers
- Which size or configuration labels have geometry for the 2025 Specialized Aethos Pro Shimano?
- Geometry is listed for 49, 52, 54, 56, 58, and 61.
- What are the reach and stack of the 2025 Specialized Aethos Pro Shimano in size 56?
- In size 56, reach is 395 mm and stack is 565 mm.
- What is the head tube angle of the 2025 Specialized Aethos Pro Shimano?
- The head tube angle is 73.5 degrees in size 56.
- What does the 2025 Specialized Aethos Pro - Shimano Ultegra Di2 ship with?
- The stock build includes Specialized Aethos FACT, Shimano Ultegra R8170 Di2, Roval Alpinist CL II, and Shimano Ultegra R8170.
- Which years of the Specialized Aethos are on Quiver?
- Quiver has the Specialized Aethos for 2025, 2024, 2023, 2022, and 2021.
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