2025 Trek Domane AL 4 Gen 4 vs 2027 Trek Domane AL Gen 4
The 49 is the Trek Domane AL Gen 4 size closest to your 49 Trek Domane AL 4 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 Gen 4
Compared with the Trek Domane AL 4 Gen 4 in 49, the Trek Domane AL Gen 4 in 49 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 4 Gen 4 numbers we have for size 49 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Domane AL 4 Gen 4 49 | Trek Domane AL Gen 4 49 | Difference |
|---|---|---|---|
| Reach | 368 | 368 | ±0 mm |
| Stack | 540 | 540 | ±0 mm |
| Head tube angle | 70.8° | 70.8° | ±0.0° |
| Effective top tube | 516 | 516 | ±0 mm |
| Chainstay length | 425 | 425 | ±0 mm |
| Wheelbase | 1001 | 1001 | ±0 mm |
| BB drop | 80 | 80 | ±0 mm |
| Standover | 717 | 717 | ±0 mm |
| Seat tube length | 440 | 440 | ±0 mm |
| Head tube length | 123 | 123 | ±0 mm |
Differences are the Trek Domane AL Gen 4 minus the Trek Domane AL 4 Gen 4. Full charts: 2025 Trek Domane AL 4 Gen 4, 2027 Trek Domane AL Gen 4.
Where each sits in its class
Trek Domane AL 4 Gen 4Trek Domane AL 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 4 Gen 4Gen 4 | Trek Domane AL Gen 4AL 2 Gen 4 |
|---|---|---|
| Frame | Trek Domane AL | not listed |
| Fork | Trek Domane AL | Trek Domane AL |
| Shifter | Shimano Tiagra | Shimano Claris ST-R2000-L |
| Derailleur | Shimano Tiagra | Shimano Claris R2000 |
| Cassette | Shimano HG500 | Shimano HG-31 |
| Chain | Shimano HG54 Tiagra | Shimano Sora HG71 |
| Crankset | Shimano Tiagra | Shimano RS200 |
| Chainring | Shimano Tiagra | not listed |
| Bottom bracket | Shimano RS501 | Shimano UN30 |
| Wheelset | Bontrager Paradigm 23 | not listed |
| Tire | Bontrager Kwaremont Comp | Bontrager Kwaremont Comp |
| Hub | Formula RX-512, Formula RX-142 | Formula RX-142, Formula RX-512 |
| Rim | Bontrager Paradigm SL | Bontrager Paradigm 23 |
| Brake | Shimano Tiagra | Tektro C550 |
| Rotor | Shimano SM-RT66 | Tektro Wave |
| Handlebar | Bontrager Comp | not listed |
| Stem | Bontrager Elite | not listed |
| Bar tape | Bontrager Supertack Performance | not listed |
| Seatpost | Bontrager Comp | not listed |
| Saddle | Bontrager Verse Short | Trek Verse |
| Headset | not listed | Bontrager Expander Plug |
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