2018 Specialized Tarmac Ultralight vs 2020 Specialized Allez Sprint
The 58.0 is the Specialized Allez Sprint size closest to your 58 Specialized Tarmac Ultralight. 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 Sprint
Compared with the Specialized Tarmac Ultralight in 58, the Specialized Allez Sprint in 58.0 places the top of the head tube 8 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 5 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −8 mm
- Lower front end
- Frame reach
- −2 mm
- About the same reach
- Wheelbase
- −5 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- −2 mm
- About the same
The two frames
Specialized Tarmac Ultralight, 58Specialized Allez Sprint, 58.0Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Tarmac Ultralight 58 | Specialized Allez Sprint 58.0 | Difference |
|---|---|---|---|
| Reach | 402mm | 400mm | −2 mm |
| Stack | 591mm | 583mm | −8 mm |
| Head tube angle | 73.5° | 73.5° | ±0.0° |
| Seat tube angle | 73.5° | 74° | +0.5° |
| Effective top tube | 577mm | not listed | |
| Chainstay length | 407mm | 405mm | −2 mm |
| Wheelbase | 1002mm | 997mm | −5 mm |
| BB drop | 72mm | 69mm | −3 mm |
| BB height | 268mm | 272.5mm | +5 mm |
| Standover | 826mm | 808.3mm | −18 mm |
| Seat tube length | 522mm | 540mm | +18 mm |
| Fork length | 363mm | 368mm | +5 mm |
| Head tube length | 190mm | 180mm | −10 mm |
Differences are the Specialized Allez Sprint minus the Specialized Tarmac Ultralight. Full charts: 2018 Specialized Tarmac Ultralight, 2020 Specialized Allez Sprint.
Where each sits in its class
Specialized Tarmac UltralightSpecialized Allez Sprint
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 Tarmac UltralightS-Works Ultralight | Specialized Allez SprintAllez Sprint Frameset |
|---|---|---|
| Frame | Specialized S-Works Tarmac SL6 | not listed |
| Shifter | Specialized C-clips | not listed |
| Seatpost | not listed | Specialized Allez Sprint |
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