2024 Trek Domane AL Gen 4 vs 2025 Trek Domane AL 4 Gen 4
The 56 is the Trek Domane AL 4 Gen 4 size closest to your 56 Trek Domane AL Gen 4. 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 4 in 56, the Trek Domane AL 4 Gen 4 in 56 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
Only the Trek Domane AL Gen 4 is drawn. The Trek Domane AL 4 Gen 4 numbers we have for size 56 are missing the seat angle.
Geometry side by side
| Measurement | Trek Domane AL Gen 4 56 | Trek Domane AL 4 Gen 4 56 | Difference |
|---|---|---|---|
| Reach | 377 | 377 | ±0 mm |
| Stack | 591 | 591 | ±0 mm |
| Head tube angle | 71.9 | 71.9° | ±0.0° |
| Seat tube angle | 73.3 | not listed | |
| Effective top tube | 554 | 554 | ±0 mm |
| Chainstay length | 420 | 420 | ±0 mm |
| Wheelbase | 1018 | 1018 | ±0 mm |
| BB drop | 78 | 78 | ±0 mm |
| Standover | 776 | 776 | ±0 mm |
| Seat tube length | 525 | 525 | ±0 mm |
| Head tube length | 175 | 175 | ±0 mm |
Differences are the Trek Domane AL 4 Gen 4 minus the Trek Domane AL Gen 4. Full charts: 2024 Trek Domane AL Gen 4, 2025 Trek Domane AL 4 Gen 4.
Where each sits in its class
Trek Domane AL Gen 4Trek 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 4AL 2 Gen 4 | Trek Domane AL 4 Gen 4Gen 4 |
|---|---|---|
| Frame | Trek Domane | Trek Domane AL |
| Fork | Trek Domane AL | Trek Domane AL |
| Shifter | Shimano Claris R2000 | Shimano Tiagra |
| Derailleur | Shimano Claris R2000 | Shimano Tiagra |
| Cassette | Shimano HG31 | Shimano HG500 |
| Chain | Shimano HG71 | Shimano HG54 Tiagra |
| Crankset | Shimano Claris R2000 | Shimano Tiagra |
| Bottom bracket | Shimano UN300 | Shimano RS501 |
| Wheelset | Bontrager Paradigm 23 | Bontrager Paradigm 23 |
| Tire | Bontrager Kwaremont Comp | Bontrager Kwaremont Comp |
| Brake | Tektro MD-C550 | Shimano Tiagra |
| Rotor | Tektro 160 | Shimano SM-RT66 |
| Handlebar | Specialized Comp | Bontrager Comp |
| Stem | Bontrager Elite | Bontrager Elite |
| Grips | Bontrager Supertack Perf | not listed |
| Seatpost | Bontrager Comp | Bontrager Comp |
| Saddle | Bontrager Verse Short | Bontrager Verse Short |
| Chainring | not listed | Shimano Tiagra |
| Hub | not listed | Formula RX-512, Formula RX-142 |
| Rim | not listed | Bontrager Paradigm SL |
| Bar tape | not listed | Bontrager Supertack Performance |
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