2019 Cannondale Synapse Disc Women’s Tiagra vs 2017 Specialized Roubaix SL4
The Specialized Roubaix SL4 size closest to your 51 is the 52. Compare the 52 instead
What changes on the Specialized Roubaix SL4
Compared with the Cannondale Synapse Disc Women’s Tiagra in 51, the Specialized Roubaix SL4 in 56 places the top of the head tube 40 mm higher and 10 mm further forward, relative to the bottom bracket. Its wheelbase is 17 mm longer, which can contribute to stability at speed.
- Frame stack
- +40 mm
- Higher front end
- Frame reach
- +10 mm
- Longer frame reach
- Wheelbase
- +17 mm
- Longer: steadier at speed
- Head angle
- +0.8°
- Steeper: sharper steering
- Chainstays
- +2 mm
- About the same
The two frames
Cannondale Synapse Disc Women’s Tiagra, 51Specialized Roubaix SL4, 56Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Cannondale Synapse Disc Women’s Tiagra 51 | Specialized Roubaix SL4 56 | Difference |
|---|---|---|---|
| Reach | 377 | 387mm | +10 mm |
| Stack | 550 | 590mm | +40 mm |
| Head tube angle | 71.7 | 72.5° | +0.8° |
| Seat tube angle | 74.3 | 73.25° | −1.0° |
| Effective top tube | 531 | 565mm | +34 mm |
| Chainstay length | 413 | 415mm | +2 mm |
| Wheelbase | 994 | 1011mm | +17 mm |
| BB drop | 75 | 71.5mm | −4 mm |
| BB height | 270 | 271mm | +1 mm |
| Standover | 742 | 798mm | +56 mm |
| Seat tube length | 443 | 515mm | +72 mm |
| Head tube length | 143 | 190mm | +47 mm |
| Fork length | not listed | 368mm |
Differences are the Specialized Roubaix SL4 minus the Cannondale Synapse Disc Women’s Tiagra. Full charts: 2019 Cannondale Synapse Disc Women’s Tiagra, 2017 Specialized Roubaix SL4.
Where each sits in its class
Cannondale Synapse Disc Women’s TiagraSpecialized Roubaix SL4
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 Disc Women’s TiagraDisc Women’s Tiagra | Specialized Roubaix SL4SL4 |
|---|---|---|
| Frame | Cannondale Synapse | Specialized SL4 FACT |
| Fork | Synapse | not listed |
| Shifter | Shimano Tiagra | Shimano Tiagra |
| Derailleur | Shimano Tiagra, Shimano Tiagra GS | Shimano Tiagra |
| Chain | KMC X10EL | KMC X-10 |
| Crankset | FSA Omega | Praxis Alba |
| Tire | Vittoria Zaffiro | Specialized Espoir Elite |
| Hub | Formula RX-512 | not listed |
| Rim | RD 3.0 | not listed |
| Brake | Promax DSK 718R, Shimano Tiagra | Specialized Axis 1.0 |
| Handlebar | Cannondale C4 | not listed |
| Stem | Cannondale C4 | not listed |
| Seatpost | Cannondale C4 | Specialized CG-R |
| Saddle | Cannondale Stage | Specialized Toupé Sport |
| Cassette | not listed | Shimano Tiagra |
| Wheelset | not listed | Specialized AXIS Elite |
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