2021 Specialized Roubaix Sagan Collection vs 2019 Specialized Allez Sport
The 49 is the Specialized Allez Sport size closest to your 44 Specialized Roubaix Sagan Collection. 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 Allez Sport
Compared with the Specialized Roubaix Sagan Collection in 44, the Specialized Allez Sport in 49 places the top of the head tube 5 mm lower and 21 mm further forward, relative to the bottom bracket. Its wheelbase is 3 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- +21 mm
- Longer frame reach
- Wheelbase
- −3 mm
- Shorter: quicker to change direction
- Head angle
- +2.3°
- Steeper: sharper steering
- Chainstays
- +2 mm
- About the same
The two frames
Specialized Roubaix Sagan Collection, 44Specialized Allez Sport, 49Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix Sagan Collection 44 | Specialized Allez Sport 49 | Difference |
|---|---|---|---|
| Reach | 353mm | 374mm | +21 mm |
| Stack | 540mm | 535mm | −5 mm |
| Head tube angle | 70° | 72.25° | +2.3° |
| Seat tube angle | 74° | 75.25° | +1.3° |
| Chainstay length | 413mm | 415mm | +2 mm |
| Wheelbase | 981mm | 978mm | −3 mm |
| BB drop | 77.5mm | 77mm | −1 mm |
| BB height | 265mm | 263mm | −2 mm |
| Standover | 682mm | 740mm | +58 mm |
| Seat tube length | 365mm | 460mm | +95 mm |
| Fork length | 370mm | 375mm | +5 mm |
| Head tube length | 90mm | 120mm | +30 mm |
| Effective top tube | not listed | 515mm |
Differences are the Specialized Allez Sport minus the Specialized Roubaix Sagan Collection. Full charts: 2021 Specialized Roubaix Sagan Collection, 2019 Specialized Allez Sport.
Where each sits in its class
Specialized Roubaix Sagan CollectionSpecialized 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 Sagan CollectionS-Works Sagan Collection | Specialized Allez SportSport |
|---|---|---|
| Fork | Specialized Future Shock 2.0 | not listed |
| Shifter | Shimano Dura-Ace Di2 | Shimano Sora |
| Derailleur | Shimano Dura-Ace R9150 Di2, Shimano Dura-Ace R9100 | Shimano Sora |
| Cassette | Shimano Dura-Ace R9100 | not listed |
| Chain | Shimano Dura-Ace | KMC X9 |
| Crankset | Shimano Dura-Ace R9100 | Praxis Alba M30 |
| Wheelset | Roval Rapide CLX | Specialized Axis Sport |
| Tire | Specialized Turbo Cotton | Specialized Espoir Sport |
| Brake | Shimano Dura-Ace | Specialized Axis 1.0 |
| Stem | Specialized S-Works Future | not listed |
| Seatpost | Specialized S-Works Pave | not listed |
| Saddle | Specialized S-Works Romin Evo | Specialized Toupé Sport |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
