2023 Trek Domane AL Gen 3 vs 2025 Trek Domane AL 4 Gen 4
The 54 is the Trek Domane AL 4 Gen 4 size closest to your 54 Trek Domane AL Gen 3. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Trek Domane AL 4 Gen 4
Compared with the Trek Domane AL Gen 3 in 54, the Trek Domane AL 4 Gen 4 in 54 places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- ±0 mm
- About the same height
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Domane AL Gen 3 numbers we have for size 54 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Domane AL Gen 3 54 | Trek Domane AL 4 Gen 4 54 | Difference |
|---|---|---|---|
| Reach | 374 | 374 | ±0 mm |
| Stack | 575 | 575 | ±0 mm |
| Head tube angle | 71.3° | 71.3° | ±0.0° |
| Effective top tube | 542 | 542 | ±0 mm |
| Chainstay length | 420 | 420 | ±0 mm |
| Wheelbase | 1010 | 1010 | ±0 mm |
| BB drop | 80 | 80 | ±0 mm |
| Standover | 754 | 754 | ±0 mm |
| Seat tube length | 500 | 500 | ±0 mm |
| Head tube length | 160 | 160 | ±0 mm |
Differences are the Trek Domane AL 4 Gen 4 minus the Trek Domane AL Gen 3. Full charts: 2023 Trek Domane AL Gen 3, 2025 Trek Domane AL 4 Gen 4.
Where each sits in its class
Trek Domane AL Gen 3Trek Domane AL 4 Gen 4
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Trek Domane AL Gen 3AL 2 Gen 3 | Trek Domane AL 4 Gen 4Gen 4 |
|---|---|---|
| Frame | Trek Alpha | Trek Domane AL |
| Fork | Trek Domane AL | Trek Domane AL |
| Shifter | Shimano Claris R2000 | Shimano Tiagra |
| Derailleur | Shimano Claris R2000 | Shimano Tiagra |
| Cassette | Shimano HG-31 | Shimano HG500 |
| Chain | Shimano Sora HG71 | Shimano HG54 Tiagra |
| Crankset | Shimano RS200 | Shimano Tiagra |
| Bottom bracket | Shimano UN26 | Shimano RS501 |
| Tire | Bontrager R1 Hard-Case Lite | Bontrager Kwaremont Comp |
| Hub | Formula RX-512, Formula RX-142 | Formula RX-512, Formula RX-142 |
| Rim | Bontrager Affinity | Bontrager Paradigm SL |
| Brake | Tektro C550 | Shimano Tiagra |
| Handlebar | Bontrager Comp VR-C | Bontrager Comp |
| Seatpost | Bontrager Approved | Bontrager Comp |
| Saddle | Bontrager P3 Verse | Bontrager Verse Short |
| Chainring | not listed | Shimano Tiagra |
| Wheelset | not listed | Bontrager Paradigm 23 |
| Rotor | not listed | Shimano SM-RT66 |
| Stem | not listed | Bontrager Elite |
| Bar tape | not listed | Bontrager Supertack Performance |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
