2015 Specialized Roubaix SL4 vs 2015 Trek Domane
The 56 is the Trek Domane size closest to your 58 Specialized Roubaix SL4. 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
Compared with the Specialized Roubaix SL4 in 58, the Trek Domane in 56 places the top of the head tube 30 mm lower and 15 mm further back, relative to the bottom bracket. Its wheelbase is 21 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −30 mm
- Lower front end
- Frame reach
- −15 mm
- Shorter frame reach
- Wheelbase
- −21 mm
- Shorter: quicker to change direction
- Head angle
- −0.6°
- Slacker: calmer steering
- Chainstays
- +2 mm
- About the same
The two frames
Specialized Roubaix SL4, 58Trek Domane, 56Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL4 58 | Trek Domane 56 | Difference |
|---|---|---|---|
| Reach | 392mm | 377 | −15 mm |
| Stack | 621mm | 591 | −30 mm |
| Head tube angle | 72.5° | 71.9 | −0.6° |
| Seat tube angle | 73° | 73.3 | +0.3° |
| Effective top tube | 582mm | not listed | |
| Chainstay length | 418mm | 420 | +2 mm |
| Wheelbase | 1029mm | 1008 | −21 mm |
| BB drop | 70mm | 78 | +8 mm |
| Standover | 829mm | not listed | |
| Seat tube length | 540mm | 525 | −15 mm |
| Head tube length | 225mm | 175 | −50 mm |
Differences are the Trek Domane minus the Specialized Roubaix SL4. Full charts: 2015 Specialized Roubaix SL4, 2015 Trek Domane.
Where each sits in its class
Specialized Roubaix SL4Trek Domane
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 SL4S-Works SL4 | Trek Domane |
|---|---|---|
| Frame | Specialized S-Works SL4 FACT | not listed |
| Seatpost | Specialized CG-R | not listed |
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