2025 Specialized Roubaix SL8 Sport vs 2025 Trek Domane SL Gen 2 Rim
The Trek Domane SL Gen 2 Rim size closest to your 54 is the 56. Compare the 56 instead
What changes on the Trek Domane SL Gen 2 Rim
Compared with the Specialized Roubaix SL8 Sport in 54, the Trek Domane SL Gen 2 Rim in 50 places the top of the head tube 39 mm lower and 13 mm further back, relative to the bottom bracket. Its wheelbase is 9 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −39 mm
- Lower front end
- Frame reach
- −13 mm
- Shorter frame reach
- Wheelbase
- −9 mm
- Shorter: quicker to change direction
- Head angle
- −1.2°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Only the Specialized Roubaix SL8 Sport is drawn. The Trek Domane SL Gen 2 Rim numbers we have for size 50 are missing the seat angle.
Geometry side by side
| Measurement | Specialized Roubaix SL8 Sport 54 | Trek Domane SL Gen 2 Rim 50 | Difference |
|---|---|---|---|
| Reach | 381mm | 368 | −13 mm |
| Stack | 585mm | 546 | −39 mm |
| Head tube angle | 72.3° | 71.1° | −1.2° |
| Seat tube angle | 74° | not listed | |
| Effective top tube | 550mm | 519 | −31 mm |
| Chainstay length | 420mm | 420 | ±0 mm |
| Wheelbase | 1005mm | 996 | −9 mm |
| BB drop | 78mm | 80 | +2 mm |
| BB height | 270mm | not listed | |
| Standover | 766mm | 716 | −50 mm |
| Seat tube length | 465mm | 450 | −15 mm |
| Fork length | 375mm | not listed | |
| Head tube length | 122mm | 130 | +8 mm |
Differences are the Trek Domane SL Gen 2 Rim minus the Specialized Roubaix SL8 Sport. Full charts: 2025 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.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Roubaix SL8 SportSL8 Sport | Trek Domane SL Gen 2 Rim |
|---|---|---|
| Fork | Specialized Future Shock 3.1 | not listed |
| Shifter | Shimano 105 R7120 | not listed |
| Derailleur | Shimano 105, Shimano 105 R7100 mechanical | not listed |
| Cassette | Shimano 105 | not listed |
| Chain | Shimano 105 | not listed |
| Crankset | Shimano 105 | not listed |
| Wheelset | DT Swiss G540 | not listed |
| Tire | Specialized S-Works Mondo 2BR | not listed |
| Brake | Shimano 105 | not listed |
| Handlebar | Specialized Hover | not listed |
| Stem | Specialized Future | not listed |
| Seatpost | Specialized S-Works Pave Seat post | not listed |
| Saddle | Specialized Power Sport | not listed |
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