2014 Specialized Allez Sport vs 2015 Specialized Tarmac Expert
The 61 is the Specialized Tarmac Expert size closest to your 580.0 Specialized Allez Sport. 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 Tarmac Expert
Compared with the Specialized Allez Sport in 580.0, the Specialized Tarmac Expert in 61 places the top of the head tube 6 mm higher and 6 mm further forward, relative to the bottom bracket. Its wheelbase is 10 mm longer, which can contribute to stability at speed.
- Frame stack
- +6 mm
- Higher front end
- Frame reach
- +6 mm
- Longer frame reach
- Wheelbase
- +10 mm
- Longer: steadier at speed
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- +3 mm
- Longer: more planted
The two frames
Specialized Allez Sport, 580.0Specialized Tarmac Expert, 61Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Allez Sport 580.0 | Specialized Tarmac Expert 61 | Difference |
|---|---|---|---|
| Reach | 402mm | 408mm | +6 mm |
| Stack | 606mm | 612mm | +6 mm |
| Head tube angle | 73.5° | 74° | +0.5° |
| Seat tube angle | 73° | 72.5° | −0.5° |
| Chainstay length | 407mm | 410mm | +3 mm |
| Wheelbase | 1003mm | 1013mm | +10 mm |
| Standover | 836mm | 850mm | +14 mm |
| Seat tube length | 540mm | 553mm | +13 mm |
| Head tube length | 205mm | 210mm | +5 mm |
| Effective top tube | not listed | 600mm | |
| BB drop | not listed | 67.5mm |
Differences are the Specialized Tarmac Expert minus the Specialized Allez Sport. Full charts: 2014 Specialized Allez Sport, 2015 Specialized Tarmac Expert.
Where each sits in its class
Specialized Allez SportSpecialized Tarmac Expert
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 Allez SportSport | Specialized Tarmac ExpertExpert |
|---|---|---|
| Shifter | Shimano Sora | Shimano Ultegra |
| Derailleur | Shimano Sora | Shimano Ultegra |
| Cassette | Shimano HG50 | Shimano Ultegra |
| Chain | KMC X9 | Shimano Ultegra |
| Crankset | FSA Tempo | not listed |
| Wheelset | Specialized AXIS Classic | Fulcrum S4 |
| Tire | Specialized Espoir Sport | Specialized Turbo Pro |
| Brake | Shimano Sora | Shimano Ultegra |
| Saddle | Specialized Riva | Specialized Toupe Expert |
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