2027 Trek Domane SLR No. Gen 5 vs 2027 Trek Domane AL 4 Gen 4
The 56 is the Trek Domane AL 4 Gen 4 size closest to your ML Trek Domane SLR No. Gen 5. 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 SLR No. Gen 5 in ML, the Trek Domane AL 4 Gen 4 in 56 places the top of the head tube 5 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 8 mm longer, which can contribute to stability at speed.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- +8 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 SLR No. Gen 5 numbers we have for size ML are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Domane SLR No. Gen 5 ML | Trek Domane AL 4 Gen 4 56 | Difference |
|---|---|---|---|
| Reach | 377 | 377 | ±0 mm |
| Stack | 596 | 591 | −5 mm |
| Head tube angle | 71.9° | 71.9 | ±0.0° |
| Effective top tube | 553 | 554 | +1 mm |
| Chainstay length | 420 | 420 | ±0 mm |
| Wheelbase | 1010 | 1018 | +8 mm |
| BB drop | 78 | 78 | ±0 mm |
| Standover | 805 | 776 | −29 mm |
| Seat tube length | 533 | 525 | −8 mm |
| Head tube length | 170 | 175 | +5 mm |
| Seat tube angle | not listed | 73.3 |
Differences are the Trek Domane AL 4 Gen 4 minus the Trek Domane SLR No. Gen 5. Full charts: 2027 Trek Domane SLR No. Gen 5, 2027 Trek Domane AL 4 Gen 4.
Where each sits in its class
Trek Domane SLR No. Gen 5Trek 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 SLR No. Gen 5SLR 9 AXS No. 76 Gen 5 | Trek Domane AL 4 Gen 4Gen 4 |
|---|---|---|
| Frame | Trek Domane SLR | Trek Domane AL |
| Fork | Trek Domane SLR | Trek Domane AL |
| Shifter | SRAM RED AXS E1 | Shimano Tiagra R4020 |
| Derailleur | SRAM RED AXS E1 | Shimano Tiagra R4000, Shimano Tiagra 4700 |
| Cassette | SRAM RED XG-1290 E1 | Shimano RS400 |
| Chain | SRAM E1 Red | Shimano LG500 |
| Crankset | SRAM E1 RED AXS | Shimano Tiagra R4000 |
| Bottom bracket | SRAM DUB | Shimano RS501 |
| Battery | SRAM AXS | not listed |
| Wheelset | Bontrager Aeolus RSL 37 | Bontrager Paradigm 23 |
| Tire | Bontrager Kwaremont | Bontrager Kwaremont |
| Rotor | SRAM Paceline | Shimano SM-RT66 |
| Handlebar | Bontrager Pro Riser | Bontrager Comp |
| Stem | Trek RCS | Bontrager Elite |
| Seatpost | Bontrager RSL | Bontrager Comp |
| Saddle | Trek Aeolus RSL | Trek Verse Short |
| Chainring | not listed | Shimano Tiagra 4700 |
| Hub | not listed | Formula RX-142, Formula RX-512 |
| Rim | not listed | Bontrager Paradigm 23 |
| Bar tape | not listed | Bontrager Supertack Perf |
| Headset | not listed | Bontrager Expander Plug |
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