2015 Specialized Roubaix SL4 Expert vs 2017 Trek Émonda SL
The 50 is the Trek Émonda SL size closest to your 49 Specialized Roubaix SL4 Expert. 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 Émonda SL
Compared with the Specialized Roubaix SL4 Expert in 49, the Trek Émonda SL in 50 places the top of the head tube 8 mm higher and 4 mm further back, relative to the bottom bracket. Its wheelbase is 9 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +8 mm
- Higher front end
- Frame reach
- −4 mm
- Shorter frame reach
- Wheelbase
- −9 mm
- Shorter: quicker to change direction
- Head angle
- +0.1°
- About the same head angle
- Chainstays
- −2 mm
- About the same
The two frames
Only the Specialized Roubaix SL4 Expert is drawn. The Trek Émonda SL numbers we have for size 50 are missing the seat angle.
Geometry side by side
| Measurement | Specialized Roubaix SL4 Expert 49 | Trek Émonda SL 50 | Difference |
|---|---|---|---|
| Reach | 378mm | 374 | −4 mm |
| Stack | 527mm | 535 | +8 mm |
| Head tube angle | 72° | 72.1° | +0.1° |
| Seat tube angle | 75.5° | not listed | |
| Effective top tube | 518mm | 521 | +3 mm |
| Chainstay length | 412mm | 410 | −2 mm |
| Wheelbase | 983mm | 974 | −9 mm |
| BB drop | 73mm | 72 | −1 mm |
| Standover | 730mm | 707 | −23 mm |
| Seat tube length | 445mm | 476 | +31 mm |
| Head tube length | 125mm | 130 | +5 mm |
Differences are the Trek Émonda SL minus the Specialized Roubaix SL4 Expert. Full charts: 2015 Specialized Roubaix SL4 Expert, 2017 Trek Émonda SL.
Where each sits in its class
Specialized Roubaix SL4 ExpertTrek Émonda SL
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 SL4 ExpertSL4 Expert | Trek Émonda SLSL 5 |
|---|---|---|
| Frame | Specialized SL4 FACT | Trek Ultralight 500 |
| Shifter | Shimano Ultegra | Shimano 105 |
| Derailleur | Shimano Ultegra | Shimano 105 |
| Cassette | Shimano Ultegra | Shimano 105 |
| Chain | Shimano Ultegra | Shimano 105 |
| Wheelset | Fulcrum S4 | not listed |
| Tire | Specialized Turbo Pro | Bontrager R2 Hard-Case Lite |
| Brake | Shimano Ultegra | Shimano 105 |
| Seatpost | Specialized CG-R | Bontrager Tuned |
| Saddle | Specialized Toupe Expert | Bontrager Montrose |
| Crankset | not listed | Shimano 105 |
| Bottom bracket | not listed | Trek BB90 |
| Handlebar | not listed | Bontrager Elite VR-C |
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