2014 Specialized Allez vs 2015 Specialized Tarmac Expert
The 54 is the Specialized Tarmac Expert size closest to your 540.0 Specialized Allez. 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 in 540.0, the Specialized Tarmac Expert in 54 places the top of the head tube 4 mm lower and about as far forward, relative to the bottom bracket.
- Frame stack
- −4 mm
- Lower front end
- Frame reach
- −0 mm
- About the same reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Allez, 540.0Specialized Tarmac Expert, 54Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Allez 540.0 | Specialized Tarmac Expert 54 | Difference |
|---|---|---|---|
| Reach | 387.037mm | 387mm | −0 mm |
| Stack | 547.384mm | 543mm | −4 mm |
| Head tube angle | 73° | 73° | ±0.0° |
| Seat tube angle | 73.5° | 73.5° | ±0.0° |
| Chainstay length | 405mm | 405mm | ±0 mm |
| Wheelbase | 978mm | 978mm | ±0 mm |
| Standover | 798mm | 775mm | −23 mm |
| Seat tube length | 500mm | 481mm | −19 mm |
| Head tube length | 145mm | 140mm | −5 mm |
| Effective top tube | not listed | 548mm | |
| BB drop | not listed | 69mm |
Differences are the Specialized Tarmac Expert minus the Specialized Allez. Full charts: 2014 Specialized Allez, 2015 Specialized Tarmac Expert.
Where each sits in its class
Specialized AllezSpecialized 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 AllezAllez | Specialized Tarmac Expert |
|---|---|---|
| Shifter | Shimano Claris R2400 | not listed |
| Derailleur | Shimano Claris R2400 | not listed |
| Cassette | Shimano HG50 | not listed |
| Chain | KMC Z51 | not listed |
| Crankset | Shimano Claris R2400 | not listed |
| Wheelset | Specialized AXIS Classic | not listed |
| Tire | Specialized Espoir Sport | not listed |
| Brake | Shimano Claris R2400 | not listed |
| Saddle | Specialized Riva | not listed |
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