2018 Trek Émonda SL Disc Frameset vs 2016 Specialized Roubaix SL4 Expert Disc UDi2
The 52.0 is the Specialized Roubaix SL4 Expert Disc UDi2 size closest to your 54 Trek Émonda SL Disc Frameset. 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 Specialized Roubaix SL4 Expert Disc UDi2
Compared with the Trek Émonda SL Disc Frameset in 54, the Specialized Roubaix SL4 Expert Disc UDi2 in 52.0 places the top of the head tube 8 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 9 mm longer, which can contribute to stability at speed.
- Frame stack
- −8 mm
- Lower front end
- Frame reach
- −2 mm
- About the same reach
- Wheelbase
- +9 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +2 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Émonda SL Disc Frameset numbers we have for size 54 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Émonda SL Disc Frameset 54 | Specialized Roubaix SL4 Expert Disc UDi2 52.0 | Difference |
|---|---|---|---|
| Reach | 381 | 379 | −2 mm |
| Stack | 555 | 547 | −8 mm |
| Head tube angle | 73.0° | 72 | −1.0° |
| Effective top tube | 543 | 536 | −7 mm |
| Chainstay length | 410 | 412 | +2 mm |
| Wheelbase | 981 | 990 | +9 mm |
| BB drop | 70 | 73 | +3 mm |
| Standover | 742 | 756 | +14 mm |
| Seat tube length | 506 | 475 | −31 mm |
| Head tube length | 155 | 145 | −10 mm |
| Seat tube angle | not listed | 74 | |
| BB height | not listed | 269.5 | |
| Fork length | not listed | 368 |
Differences are the Specialized Roubaix SL4 Expert Disc UDi2 minus the Trek Émonda SL Disc Frameset. Full charts: 2018 Trek Émonda SL Disc Frameset, 2016 Specialized Roubaix SL4 Expert Disc UDi2.
Where each sits in its class
Trek Émonda SL Disc FramesetSpecialized Roubaix SL4 Expert Disc UDi2
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 Émonda SL Disc FramesetSL Disc Frameset | Specialized Roubaix SL4 Expert Disc UDi2SL4 Expert Disc UDi2 |
|---|---|---|
| Frame | Trek Ultralight 500 | Specialized SL4 FACT |
| Fork | not listed | Specialized FACT carbon |
| Shifter | not listed | Shimano 785 Di2 |
| Derailleur | not listed | Shimano Ultegra Di2 |
| Cassette | not listed | Shimano Ultegra |
| Chain | not listed | Shimano Ultegra |
| Crankset | not listed | Shimano Ultegra |
| Wheelset | not listed | Fulcrum S-19 |
| Tire | not listed | Specialized Turbo Pro |
| Brake | not listed | Shimano BR-785 |
| Handlebar | not listed | Specialized Expert |
| Stem | not listed | Specialized Pro SL |
| Bar tape | not listed | Specialized CX Pro |
| Seatpost | not listed | Specialized CG-R |
| Saddle | not listed | Specialized Phenom Expert |
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