2024 Trek Domane SL Gen 4 vs 2025 Specialized Roubaix SL8 Pro
The Specialized Roubaix SL8 Pro size closest to your 54 is the 52. Compare the 52 instead
What changes on the Specialized Roubaix SL8 Pro
Compared with the Trek Domane SL Gen 4 in 54, the Specialized Roubaix SL8 Pro in 44 places the top of the head tube 32 mm lower and 21 mm further back, relative to the bottom bracket. Its wheelbase is 16 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −32 mm
- Lower front end
- Frame reach
- −21 mm
- Shorter frame reach
- Wheelbase
- −16 mm
- Shorter: quicker to change direction
- Head angle
- −2.0°
- Slacker: calmer steering
- Chainstays
- −2 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 54 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Domane SL Gen 4 54 | Specialized Roubaix SL8 Pro 44 | Difference |
|---|---|---|---|
| Reach | 374 | 353mm | −21 mm |
| Stack | 575 | 543mm | −32 mm |
| Head tube angle | 71.3° | 69.3° | −2.0° |
| Effective top tube | 542 | not listed | |
| Chainstay length | 420 | 418mm | −2 mm |
| Wheelbase | 1010 | 994mm | −16 mm |
| BB drop | 80 | 80mm | ±0 mm |
| Standover | 754 | 686mm | −68 mm |
| Seat tube length | 500 | 365mm | −135 mm |
| Head tube length | 160 | 90mm | −70 mm |
| Seat tube angle | not listed | 75° | |
| BB height | not listed | 269mm | |
| Fork length | not listed | 375mm |
Differences are the Specialized Roubaix SL8 Pro minus the Trek Domane SL Gen 4. Full charts: 2024 Trek Domane SL Gen 4, 2025 Specialized Roubaix SL8 Pro.
Where each sits in its class
Trek Domane SL Gen 4Specialized Roubaix SL8 Pro
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 | Specialized Roubaix SL8 ProSL8 Pro |
|---|---|---|
| Fork | Trek Domane SL | Specialized Future Shock 3.3 |
| Wheelset | Bontrager Paradigm SL | Roval Terra CL II |
| Tire | Bontrager R3 Hard-Case Lite | Specialized S-Works Mondo 2BR |
| Handlebar | Bontrager Elite IsoZone VR-SF | not listed |
| Shifter | not listed | Shimano Ultegra R8170 Di2 |
| Derailleur | not listed | Shimano Ultegra R8150 Di2 |
| Cassette | not listed | Shimano Ultegra |
| Chain | not listed | Shimano XT M8100 |
| Crankset | not listed | Shimano Ultegra R8100 |
| Brake | not listed | Shimano Ultegra |
| Stem | not listed | Specialized Future |
| Seatpost | not listed | Specialized S-Works Pave Seat post |
| Saddle | not listed | Specialized Power Pro Mirror |
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