2018 Cannondale Synapse Hi-MOD Disc eTap vs 2016 Specialized Roubaix SL4 Expert Disc UDi2
The 56.0 is the Specialized Roubaix SL4 Expert Disc UDi2 size closest to your 56 Cannondale Synapse Hi-MOD Disc eTap. 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 Cannondale Synapse Hi-MOD Disc eTap in 56, the Specialized Roubaix SL4 Expert Disc UDi2 in 56.0 places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket. Its wheelbase is 16 mm longer, which can contribute to stability at speed.
- Frame stack
- ±0 mm
- About the same height
- Frame reach
- +1 mm
- About the same reach
- Wheelbase
- +16 mm
- Longer: steadier at speed
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
We can't draw these frames yet. The Cannondale Synapse Hi-MOD Disc eTap numbers we have for size 56 are missing the chainstay length. The numbers below still compare.
Geometry side by side
| Measurement | Cannondale Synapse Hi-MOD Disc eTap 56 | Specialized Roubaix SL4 Expert Disc UDi2 56.0 | Difference |
|---|---|---|---|
| Reach | 386 | 387 | +1 mm |
| Stack | 590 | 590 | ±0 mm |
| Head tube angle | 73 | 72.5 | −0.5° |
| Seat tube angle | 73.5 | 73.25 | −0.3° |
| Effective top tube | 561 | 565 | +4 mm |
| Wheelbase | 995 | 1011 | +16 mm |
| BB drop | 73 | 71.5 | −2 mm |
| BB height | 272 | 271 | −1 mm |
| Standover | 804 | 798 | −6 mm |
| Seat tube length | 520 | 515 | −5 mm |
| Head tube length | 173 | 190 | +17 mm |
| Chainstay length | not listed | 415 | |
| Fork length | not listed | 368 |
Differences are the Specialized Roubaix SL4 Expert Disc UDi2 minus the Cannondale Synapse Hi-MOD Disc eTap. Full charts: 2018 Cannondale Synapse Hi-MOD Disc eTap, 2016 Specialized Roubaix SL4 Expert Disc UDi2.
Where each sits in its class
Cannondale Synapse Hi-MOD Disc eTapSpecialized 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 | Cannondale Synapse Hi-MOD Disc eTapHi-MOD Disc RED eTap | Specialized Roubaix SL4 Expert Disc UDi2SL4 Expert Disc UDi2 |
|---|---|---|
| Frame | Cannondale Synapse | Specialized SL4 FACT |
| Fork | Synapse | Specialized FACT carbon |
| Shifter | SRAM RED ETAP HRD | Shimano 785 Di2 |
| Derailleur | SRAM RED E-TAP, SRAM RED eTap WiFli | Shimano Ultegra Di2 |
| Cassette | SRAM PG-1170 | Shimano Ultegra |
| Chain | SRAM PC-1170 | Shimano Ultegra |
| Crankset | SRAM RED | Shimano Ultegra |
| Wheelset | Cannondale HollowGram Si | Fulcrum S-19 |
| Brake | SRAM RED eTap hydro, SRAM RED eTap HRD | Shimano BR-785 |
| Handlebar | Cannondale Escape | Specialized Expert |
| Stem | Cannondale SAVE | Specialized Pro SL |
| Headset | Synapse Si | not listed |
| Seatpost | Cannondale SAVE | Specialized CG-R |
| Saddle | Fabric Scoop | Specialized Phenom Expert |
| Tire | not listed | Specialized Turbo Pro |
| Bar tape | not listed | Specialized CX Pro |
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