2015 Specialized Roubaix SL4 Pro Disc Race UDi2 vs 2016 Cervélo C5
The 56 is the Cervélo C5 size closest to your 56 Specialized Roubaix SL4 Pro Disc Race UDi2. 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 Cervélo C5
Compared with the Specialized Roubaix SL4 Pro Disc Race UDi2 in 56, the Cervélo C5 in 56 places the top of the head tube 6 mm higher and 5 mm further back, relative to the bottom bracket. Its wheelbase is 14 mm longer, which can contribute to stability at speed.
- Frame stack
- +6 mm
- Higher front end
- Frame reach
- −5 mm
- Shorter frame reach
- Wheelbase
- +14 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Specialized Roubaix SL4 Pro Disc Race UDi2, 56Cervélo C5, 56Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL4 Pro Disc Race UDi2 56 | Cervélo C5 56 | Difference |
|---|---|---|---|
| Reach | 387mm | 382 | −5 mm |
| Stack | 589mm | 595 | +6 mm |
| Head tube angle | 72.5° | 71.5 | −1.0° |
| Seat tube angle | 73.25° | 73 | −0.3° |
| Effective top tube | 565mm | 565 | ±0 mm |
| Chainstay length | 415mm | 420 | +5 mm |
| Wheelbase | 1010mm | 1024 | +14 mm |
| BB drop | 71.5mm | 75 | +4 mm |
| Standover | 798mm | 790 | −8 mm |
| Seat tube length | 515mm | not listed | |
| Head tube length | 190mm | 180.1 | −10 mm |
Differences are the Cervélo C5 minus the Specialized Roubaix SL4 Pro Disc Race UDi2. Full charts: 2015 Specialized Roubaix SL4 Pro Disc Race UDi2, 2016 Cervélo C5.
Where each sits in its class
Specialized Roubaix SL4 Pro Disc Race UDi2Cervélo C5
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 Pro Disc Race UDi2SL4 Pro Disc Race UDi2 | Cervélo C5 |
|---|---|---|
| Frame | Specialized SL4 FACT | not listed |
| Shifter | Shimano 785 Di2 | not listed |
| Derailleur | Shimano Ultegra Di2 | not listed |
| Cassette | Shimano Ultegra | not listed |
| Chain | Shimano Ultegra | not listed |
| Wheelset | Roval Rapide CL 40 SCS | not listed |
| Tire | Specialized Turbo Pro | not listed |
| Brake | Shimano 785 | not listed |
| Seatpost | Specialized CG-R | not listed |
| Saddle | Specialized Toupe Expert | not listed |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
