2019 Specialized Allez vs 2020 Specialized Roubaix
The 58 is the Specialized Roubaix size closest to your 58 Specialized Allez. 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
Compared with the Specialized Allez in 58, the Specialized Roubaix in 58 places the top of the head tube 3 mm higher and about as far forward, relative to the bottom bracket. Its wheelbase is 3 mm longer, which can contribute to stability at speed.
- Frame stack
- +3 mm
- Higher front end
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- +3 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +3 mm
- Longer: more planted
The two frames
Specialized Allez, 58Specialized Roubaix, 58Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Allez 58 | Specialized Roubaix 58 | Difference |
|---|---|---|---|
| Reach | 390mm | 392 | +2 mm |
| Stack | 627mm | 630 | +3 mm |
| Head tube angle | 73.5° | 73.5 | ±0.0° |
| Seat tube angle | 73.25° | 73.5 | +0.3° |
| Effective top tube | 579mm | not listed | |
| Chainstay length | 415mm | 418 | +3 mm |
| Wheelbase | 1011mm | 1014 | +3 mm |
| BB drop | 74.5mm | 74.5 | ±0 mm |
| BB height | 265.5mm | 268mm | +3 mm |
| Standover | 826mm | 805 | −21 mm |
| Seat tube length | 550mm | 505 | −45 mm |
| Fork length | 375mm | 370 | −5 mm |
| Head tube length | 215mm | 170 | −45 mm |
Differences are the Specialized Roubaix minus the Specialized Allez. Full charts: 2019 Specialized Allez, 2020 Specialized Roubaix.
Where each sits in its class
Specialized AllezSpecialized Roubaix
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 AllezAllez | Specialized RoubaixRoubaix |
|---|---|---|
| Shifter | Shimano Claris R2000 | Shimano Tiagra |
| Derailleur | Shimano Claris | Shimano Tiagra |
| Chain | KMC X8 | KMC X10 |
| Crankset | Shimano Claris R200 | Praxis Alba |
| Wheelset | Specialized Axis Sport | Specialized Axis Sport |
| Tire | Specialized Espoir Sport | Specialized Espoir Sport |
| Saddle | Specialized Toupé Sport | Specialized Power Sport |
| Frame | not listed | Specialized FACT 10R |
| Fork | not listed | Specialized Future Shock 1.5 |
| Cassette | not listed | Shimano Tiagra |
| Chainring | not listed | Praxis Alba |
| Brake | not listed | Shimano Tiagra |
| Handlebar | not listed | Specialized Hover |
| Stem | not listed | Specialized 3D-forged |
| Seatpost | not listed | Specialized S-Works Pave |
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