2021 Specialized Roubaix 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 in 54, the Specialized Allez Sport in 58 places the top of the head tube 42 mm higher and 14 mm further forward, relative to the bottom bracket. Its wheelbase is 23 mm longer, which can contribute to stability at speed.
- Frame stack
- +42 mm
- Higher front end
- Frame reach
- +14 mm
- Longer frame reach
- Wheelbase
- +23 mm
- Longer: steadier at speed
- Head angle
- +0.8°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Roubaix, 54Specialized Allez Sport, 58Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix 54 | Specialized Allez Sport 58 | Difference |
|---|---|---|---|
| Reach | 376mm | 390mm | +14 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 | 988mm | 1011mm | +23 mm |
| BB drop | 76mm | 74.5mm | −2 mm |
| BB height | 266mm | 265.5mm | −1 mm |
| Standover | 762mm | 826mm | +64 mm |
| Seat tube length | 465mm | 550mm | +85 mm |
| Fork length | 370mm | 375mm | +5 mm |
| Head tube length | 125mm | 215mm | +90 mm |
| Effective top tube | not listed | 579mm |
Differences are the Specialized Allez Sport minus the Specialized Roubaix. Full charts: 2021 Specialized Roubaix, 2019 Specialized Allez Sport.
Where each sits in its class
Specialized RoubaixSpecialized 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 RoubaixRoubaix | Specialized Allez SportSport |
|---|---|---|
| Fork | Specialized Future Shock 1.5 | not listed |
| Shifter | Shimano Tiagra | Shimano Sora |
| Derailleur | Shimano Tiagra | Shimano Sora |
| Cassette | Shimano Tiagra | not listed |
| Chain | KMC X10 | KMC X9 |
| Crankset | Praxis Alba | Praxis Alba M30 |
| Wheelset | Specialized AXIS Elite | Specialized Axis Sport |
| Tire | Specialized Espoir Sport | Specialized Espoir Sport |
| Handlebar | Specialized Hover | not listed |
| Stem | Specialized Future | not listed |
| Seatpost | Specialized S-Works Pave | not listed |
| Saddle | Specialized Power Sport | Specialized Toupé Sport |
| Brake | not listed | Specialized Axis 1.0 |
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