2025 Trek Domane SL Gen 4 vs 2025 Trek Domane AL 4 Gen 4
The 61 is the Trek Domane AL 4 Gen 4 size closest to your 60 Trek Domane SL 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 SL Gen 4 in 60, the Trek Domane AL 4 Gen 4 in 61 places the top of the head tube 14 mm higher and about as far forward, relative to the bottom bracket. Its wheelbase is 6 mm longer, which can contribute to stability at speed.
- Frame stack
- +14 mm
- Higher front end
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- +6 mm
- Longer: steadier at speed
- 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 SL Gen 4 numbers we have for size 60 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Domane SL Gen 4 60 | Trek Domane AL 4 Gen 4 61 | Difference |
|---|---|---|---|
| Reach | 383 | 385 | +2 mm |
| Stack | 632 | 646 | +14 mm |
| Head tube angle | 72.1° | 72.1° | ±0.0° |
| Effective top tube | 579 | 586 | +7 mm |
| Chainstay length | 425 | 425 | ±0 mm |
| Wheelbase | 1032 | 1038 | +6 mm |
| BB drop | 75 | 75 | ±0 mm |
| Standover | 817 | 842 | +25 mm |
| Seat tube length | 567 | 576 | +9 mm |
| Head tube length | 220 | 235 | +15 mm |
Differences are the Trek Domane AL 4 Gen 4 minus the Trek Domane SL Gen 4. Full charts: 2025 Trek Domane SL Gen 4, 2025 Trek Domane AL 4 Gen 4.
Where each sits in its class
Trek Domane SL 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 SL Gen 4SL 5 Gen 4 | Trek Domane AL 4 Gen 4Gen 4 |
|---|---|---|
| Frame | Trek Domane SL | Trek Domane AL |
| Fork | Trek Domane SL | Trek Domane AL |
| Shifter | Shimano 105 R7120 | Shimano Tiagra |
| Derailleur | Shimano 105 R7100 | Shimano Tiagra |
| Cassette | Shimano 105 R7101 | Shimano HG500 |
| Chain | Shimano SLX M7100 | Shimano HG54 Tiagra |
| Crankset | Shimano 105 R7100 | Shimano Tiagra |
| Bottom bracket | Praxis T47 | Shimano RS501 |
| Wheelset | Bontrager Paradigm SL | Bontrager Paradigm 23 |
| Tire | Bontrager R3 | Bontrager Kwaremont Comp |
| Rim | Bontrager Paradigm SL | Bontrager Paradigm SL |
| Brake | Shimano Disc 105 | Shimano Tiagra |
| Rotor | Shimano SM-RT70 | Shimano SM-RT66 |
| Handlebar | Bontrager IsoZone VR-SF | Bontrager Comp |
| Stem | Trek RCS | Bontrager Elite |
| Bar tape | Bontrager Supertack Perf | Bontrager Supertack Performance |
| Seatpost | Aero Carbon | Bontrager Comp |
| Saddle | Bontrager Short Comp | Bontrager Verse Short |
| Bag | Bontrager BITS | not listed |
| Chainring | not listed | Shimano Tiagra |
| Hub | not listed | Formula RX-512, Formula RX-142 |
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