2018 Specialized Roubaix Men's Sagan Collection 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 Men's Sagan Collection 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 Men's Sagan Collection, 54Specialized Allez Sport, 58Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix Men's Sagan Collection 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° |
| Effective top tube | 545mm | 579mm | +34 mm |
| Chainstay length | 415mm | 415mm | ±0 mm |
| Wheelbase | 987mm | 1011mm | +24 mm |
| BB drop | 76mm | 74.5mm | −2 mm |
| Standover | 762mm | 826mm | +64 mm |
| Seat tube length | 481mm | 550mm | +69 mm |
| Head tube length | 125mm | 215mm | +90 mm |
| BB height | not listed | 265.5mm | |
| Fork length | not listed | 375mm |
Differences are the Specialized Allez Sport minus the Specialized Roubaix Men's Sagan Collection. Full charts: 2018 Specialized Roubaix Men's Sagan Collection, 2019 Specialized Allez Sport.
Where each sits in its class
Specialized Roubaix Men's 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 Men's Sagan CollectionMen's S-Works Di2 Sagan Collection | Specialized Allez SportSport |
|---|---|---|
| Shifter | Shimano Dura-Ace Di2 | Shimano Sora |
| Derailleur | Shimano Dura-Ace R9150 Di2 | Shimano Sora |
| Cassette | Shimano Dura-Ace R9100 | not listed |
| Chain | KMC X11SL | KMC X9 |
| Crankset | Specialized S-Works Power Cranks—Dual | Praxis Alba M30 |
| Wheelset | Roval CLX 32 | Specialized Axis Sport |
| Tire | Specialized Turbo Cotton | Specialized Espoir Sport |
| Brake | Shimano Dura-Ace R9170 Di2 | Specialized Axis 1.0 |
| Seatpost | Specialized CG-R | not listed |
| Saddle | Specialized S-Works Phenom | Specialized Toupé Sport |
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