2015 Specialized Allez Comp Race vs 2017 Specialized Tarmac Pro
The 52 is the Specialized Tarmac Pro size closest to your 49 Specialized Allez Comp Race. 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 Pro
Compared with the Specialized Allez Comp Race in 49, the Specialized Tarmac Pro in 52 places the top of the head tube 3 mm higher and 6 mm further forward, relative to the bottom bracket.
- Frame stack
- +3 mm
- Higher front end
- Frame reach
- +6 mm
- Longer frame reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- +0.8°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Allez Comp Race, 49Specialized Tarmac Pro, 52Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Allez Comp Race 49 | Specialized Tarmac Pro 52 | Difference |
|---|---|---|---|
| Reach | 380mm | 386mm | +6 mm |
| Stack | 523mm | 526mm | +3 mm |
| Head tube angle | 72.25° | 73° | +0.8° |
| Seat tube angle | 75.5° | 74° | −1.5° |
| Effective top tube | 518mm | 537mm | +19 mm |
| Chainstay length | 405mm | 405mm | ±0 mm |
| Wheelbase | 970mm | 970mm | ±0 mm |
| BB drop | 71.5mm | 71.5mm | ±0 mm |
| Standover | 741mm | 755mm | +14 mm |
| Seat tube length | 460mm | 462mm | +2 mm |
| Head tube length | 120mm | 120mm | ±0 mm |
| BB height | not listed | 270mm | |
| Fork length | not listed | 368mm |
Differences are the Specialized Tarmac Pro minus the Specialized Allez Comp Race. Full charts: 2015 Specialized Allez Comp Race, 2017 Specialized Tarmac Pro.
Where each sits in its class
Specialized Allez Comp RaceSpecialized Tarmac Pro
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 Comp RaceComp Race | Specialized Tarmac ProPro |
|---|---|---|
| Shifter | Shimano 105 | not listed |
| Derailleur | Shimano 105 | not listed |
| Cassette | Shimano 105 | not listed |
| Chain | KMC X-11 | not listed |
| Crankset | Praxis TURN Zayante | not listed |
| Wheelset | Roval Rapide CL 40 | not listed |
| Tire | Specialized Turbo Pro | not listed |
| Brake | Specialized AXIS 2.0 | not listed |
| Saddle | Specialized Toupé Sport | not listed |
| Bottom bracket | not listed | Praxis 6806 |
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