2021 Specialized Roubaix Sport 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 Sport in 54, the Specialized Allez Sport in 52 places the top of the head tube 33 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 10 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −33 mm
- Lower front end
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- −10 mm
- Shorter: quicker to change direction
- Head angle
- +0.3°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Roubaix Sport, 54Specialized Allez Sport, 52Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix Sport 54 | Specialized Allez Sport 52 | Difference |
|---|---|---|---|
| Reach | 376 | 376mm | ±0 mm |
| Stack | 585 | 552mm | −33 mm |
| Head tube angle | 72.75 | 73° | +0.3° |
| Seat tube angle | 74° | 73.25° | −0.8° |
| Chainstay length | 415 | 415mm | ±0 mm |
| Wheelbase | 988mm | 978mm | −10 mm |
| BB drop | 76mm | 77mm | +1 mm |
| BB height | 266mm | 263mm | −3 mm |
| Standover | 762mm | 755mm | −7 mm |
| Seat tube length | 465mm | 490mm | +25 mm |
| Fork length | 370mm | 375mm | +5 mm |
| Head tube length | 125mm | 135mm | +10 mm |
| Effective top tube | not listed | 542mm |
Differences are the Specialized Allez Sport minus the Specialized Roubaix Sport. Full charts: 2021 Specialized Roubaix Sport, 2019 Specialized Allez Sport.
Where each sits in its class
Specialized Roubaix SportSpecialized 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 SportSport | Specialized Allez SportSport |
|---|---|---|
| Frame | Specialized Roubaix | not listed |
| Fork | Specialized Future Shock 1.5 | not listed |
| Shifter | Shimano 105 R7020 | Shimano Sora |
| Derailleur | Shimano 105 R7000, Shimano 105 R7000 GS | Shimano Sora |
| Cassette | Shimano 105 | not listed |
| Chain | KMC X11 Extra | KMC X9 |
| Crankset | Praxis Alba | Praxis Alba M30 |
| Wheelset | DT Swiss R470 | Specialized Axis Sport |
| Tire | Specialized Turbo Pro | Specialized Espoir Sport |
| Brake | Shimano 105 | Specialized Axis 1.0 |
| Handlebar | Specialized Hover | not listed |
| Stem | Specialized Future | not listed |
| Seatpost | Specialized S-Works Pave | not listed |
| Saddle | Specialized Power Sport | Specialized Toupé Sport |
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