2026
2026 Trek Domane AL Gen 4
The 2026 Trek Domane AL Gen 4 sits more upright than most road bikes, with a slacker head angle. Reach 360 to 385 mm, stack 510 to 646 mm. The Domane AL 2 Gen 4 build comes with Shimano Claris R2000 shifting and Bontrager Paradigm 23 wheels.
Source: trekbikes.com. Checked .
Key facts
- Brand
- Trek
- Model
- Domane
- Model year
- 2026
- Frame
- AL Gen 4
- Type
- Road
- Geometry labels
- 44, 49, 52, 54, 56, 58, and 61
- Drivetrain
- Varies by build
- Fork
- Trek Domane AL
- Wheels
- Bontrager Paradigm 23
- Geometry
- Complete for every size
- Source
- trekbikes.com
- Checked
Geometry by size
| Measurement | 44 | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|---|
| Reach(mm) | 360 | 368 | 371 | 374 | 377 | 380 | 385 |
| Stack(mm) | 510 | 540 | 561 | 575 | 591 | 611 | 646 |
| Head tube angle(°) | 70.3 | 70.8 | 71.3 | 71.3 | 71.9 | 72.0 | 72.1 |
| Seat tube angle(°) | 74.6 | 74.6 | 74.2 | 73.7 | 73.3 | 73.0 | 72.7 |
| Effective top tube(mm) | 507 (from the manufacturer) | 516 | 530 | 542 | 554 | 567 | 586 |
| Chainstay length(mm) | 420 | 425 | 420 | 420 | 420 | 425 | 425 |
| Wheelbase(mm) | 983 | 1001 | 1003 | 1010 | 1018 | 1022 | 1038 |
| BB drop(mm) | 80 | 80 | 80 | 80 | 78 | 78 | 75 |
| Standover(mm) | 657 | 717 | 735 | 754 | 776 | 796 | 842 |
| Seat tube length(mm) | 390 | 440 | 475 | 500 | 525 | 548 | 576 |
| Head tube length(mm) | 95 | 123 | 145 | 160 | 175 | 195 | 235 |
Stock build
Domane AL 2 Gen 4
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Keep your Domane AL 2 Gen 4 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
Domane AL 4 Gen 4
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Keep your Domane AL 4 Gen 4 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
Domane AL 5 Gen 4
No stock build on file yet.
Requested. Requests decide what we research next.
Keep your Domane AL 5 Gen 4 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
MManufacturer
Quick answers
- Which size or configuration labels have geometry for the 2026 Trek Domane AL Gen 4?
- Geometry is listed for 44, 49, 52, 54, 56, 58, and 61.
- What are the reach and stack of the 2026 Trek Domane AL Gen 4 in size 54?
- In size 54, reach is 374 mm and stack is 575 mm.
- What is the head tube angle of the 2026 Trek Domane AL Gen 4?
- The head tube angle is 71.3 degrees in size 54.
- What does the 2026 Trek Domane AL 2 Gen 4 ship with?
- The stock build includes Trek Domane AL, Trek Domane AL, Shimano Claris R2000, and Bontrager Paradigm 23.
- Which years of the Trek Domane are on Quiver?
- Quiver has the Trek Domane for 2026, 2027, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, and 2013.
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