2017 Specialized Roubaix Pro vs 2019 Specialized Allez Sport
The Specialized Allez Sport size closest to your 54 is the 56. Compare the 56 instead
What changes on the Specialized Allez Sport
Compared with the Specialized Roubaix Pro in 54, the Specialized Allez Sport in 58 places the top of the head tube 42 mm higher and 15 mm further forward, relative to the bottom bracket. Its wheelbase is 24 mm longer, which can contribute to stability at speed.
- Frame stack
- +42 mm
- Higher front end
- Frame reach
- +15 mm
- Longer frame reach
- Wheelbase
- +24 mm
- Longer: steadier at speed
- Head angle
- +0.8°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Roubaix Pro, 54Specialized Allez Sport, 58Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix Pro 54 | Specialized Allez Sport 58 | Difference |
|---|---|---|---|
| Reach | 375mm | 390mm | +15 mm |
| Stack | 585mm | 627mm | +42 mm |
| Head tube angle | 72.75° | 73.5° | +0.8° |
| Seat tube angle | 74° | 73.25° | −0.8° |
| Chainstay length | 415mm | 415mm | ±0 mm |
| Wheelbase | 987mm | 1011mm | +24 mm |
| Standover | 762mm | 826mm | +64 mm |
| Seat tube length | 481mm | 550mm | +69 mm |
| Head tube length | 125mm | 215mm | +90 mm |
| Effective top tube | not listed | 579mm | |
| BB drop | not listed | 74.5mm | |
| BB height | not listed | 265.5mm | |
| Fork length | not listed | 375mm |
Differences are the Specialized Allez Sport minus the Specialized Roubaix Pro. Full charts: 2017 Specialized Roubaix Pro, 2019 Specialized Allez Sport.
Where each sits in its class
Specialized Roubaix ProSpecialized Allez Sport
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 ProPro Di2 | Specialized Allez SportSport |
|---|---|---|
| Shifter | Shimano 105 R785 Di2 | Shimano Sora |
| Derailleur | Shimano Ultegra R6870 Di2, Shimano Ultegra Di2 | Shimano Sora |
| Cassette | Shimano Ultegra | not listed |
| Chain | Shimano Ultegra | KMC X9 |
| Bottom bracket | Praxis 6806 | not listed |
| Wheelset | Specialized CL 32 | Specialized Axis Sport |
| Tire | Specialized Turbo Pro | Specialized Espoir Sport |
| Brake | Shimano RS805 | Specialized Axis 1.0 |
| Handlebar | Specialized S-Works Hover | not listed |
| Seatpost | Specialized CG-R | not listed |
| Saddle | Specialized Phenom Expert GT | Specialized Toupé Sport |
| Crankset | not listed | Praxis Alba M30 |
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