2019 Specialized Roubaix Sport vs 2021 Specialized Allez Sport
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the Specialized Allez Sport
- Frame stack
- n/a
- One of the bikes has no number for this
- Frame reach
- +1 mm
- About the same reach
- Wheelbase
- −4 mm
- Shorter: quicker to change direction
- Head angle
- +0.3°
- About the same head angle
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Only the Specialized Roubaix Sport is drawn. The Specialized Allez Sport numbers we have for size 52 are missing the stack.
Geometry side by side
| Measurement | Specialized Roubaix Sport 54 | Specialized Allez Sport 52 | Difference |
|---|---|---|---|
| Reach | 375mm | 376mm | +1 mm |
| Stack | 585mm | not listed | |
| Head tube angle | 72.75° | 73° | +0.3° |
| Seat tube angle | 74° | 73.25° | −0.8° |
| Effective top tube | 545mm | not listed | |
| Chainstay length | 415mm | 420mm | +5 mm |
| Wheelbase | 987mm | 983mm | −4 mm |
| BB drop | 76mm | not listed | |
| Standover | 762mm | 745mm | −17 mm |
| Seat tube length | 481mm | 490mm | +9 mm |
| Head tube length | 125mm | 140mm | +15 mm |
| Fork length | not listed | 368mm |
Differences are the Specialized Allez Sport minus the Specialized Roubaix Sport. Full charts: 2019 Specialized Roubaix Sport, 2021 Specialized Allez Sport.
Where each sits in its class
Specialized Roubaix SportSpecialized Allez Sport
AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted
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 |
|---|---|---|
| Shifter | Shimano 105 R7020 | Shimano Sora |
| Derailleur | Shimano 105 | Shimano Sora |
| Cassette | Shimano 105 | not listed |
| Chain | KMC X10 Extra | KMC X9 |
| Crankset | Praxis Alba | Praxis Alba |
| Wheelset | DT Swiss R470 | Specialized Axis Sport |
| Tire | Specialized Turbo Pro | Specialized Roadsport |
| Brake | Shimano 105 | Specialized Axis 1.0 |
| Handlebar | Specialized Comp Hover | Specialized Shallow Drop |
| Saddle | Specialized Phenom Comp | Specialized Bridge Saddle |
| Frame | not listed | Specialized Allez |
| Fork | not listed | Specialized FACT |
| Chainring | not listed | Praxis Alba |
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