2024 Specialized Roubaix SL8 Sport vs 2025 Trek Domane SL Gen 2 Rim
The 58 is the Trek Domane SL Gen 2 Rim size closest to your 56 Specialized Roubaix SL8 Sport. 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 SL Gen 2 Rim
Compared with the Specialized Roubaix SL8 Sport in 56, the Trek Domane SL Gen 2 Rim in 58 places the top of the head tube 6 mm higher and 9 mm further back, relative to the bottom bracket. Its wheelbase is 10 mm longer, which can contribute to stability at speed.
- Frame stack
- +6 mm
- Higher front end
- Frame reach
- −9 mm
- Shorter frame reach
- Wheelbase
- +10 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Only the Specialized Roubaix SL8 Sport is drawn. The Trek Domane SL Gen 2 Rim numbers we have for size 58 are missing the seat angle.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Sport 56 | Trek Domane SL Gen 2 Rim 58 | Difference |
|---|---|---|---|
| Reach | 389mm | 380 | −9 mm |
| Stack | 605mm | 611 | +6 mm |
| Head tube angle | 73° | 72.0° | −1.0° |
| Seat tube angle | 73.5° | not listed | |
| Chainstay length | 420mm | 425 | +5 mm |
| Wheelbase | 1012mm | 1022 | +10 mm |
| BB drop | 78mm | 78 | ±0 mm |
| BB height | 270mm | not listed | |
| Standover | 787mm | 796 | +9 mm |
| Seat tube length | 485mm | 548 | +63 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 140mm | 195 | +55 mm |
| Effective top tube | not listed | 567 |
Differences are the Trek Domane SL Gen 2 Rim minus the Specialized Roubaix SL8 Sport. Full charts: 2024 Specialized Roubaix SL8 Sport, 2025 Trek Domane SL Gen 2 Rim.
Where each sits in its class
Specialized Roubaix SL8 SportTrek Domane SL Gen 2 Rim
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
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