2018 Specialized Tarmac Disc vs 2020 Specialized Tarmac SL6 Disc
The 54 is the Specialized Tarmac SL6 Disc size closest to your 54 Specialized Tarmac Disc. 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 SL6 Disc
Compared with the Specialized Tarmac Disc in 54, the Specialized Tarmac SL6 Disc in 54 places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- ±0 mm
- About the same height
- 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 Tarmac Disc, 54Specialized Tarmac SL6 Disc, 54Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Tarmac Disc 54 | Specialized Tarmac SL6 Disc 54 | Difference |
|---|---|---|---|
| Reach | 384mm | 384mm | ±0 mm |
| Stack | 544mm | 544mm | ±0 mm |
| Head tube angle | 73° | 73° | ±0.0° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Effective top tube | 540mm | not listed | |
| Chainstay length | 410mm | 410mm | ±0 mm |
| Wheelbase | 978mm | 978mm | ±0 mm |
| BB drop | 72mm | 72mm | ±0 mm |
| BB height | 268mm | 268mm | ±0 mm |
| Standover | 775mm | 775mm | ±0 mm |
| Seat tube length | 481mm | 481mm | ±0 mm |
| Fork length | 363mm | 363mm | ±0 mm |
| Head tube length | 143mm | 143mm | ±0 mm |
Differences are the Specialized Tarmac SL6 Disc minus the Specialized Tarmac Disc. Full charts: 2018 Specialized Tarmac Disc, 2020 Specialized Tarmac SL6 Disc.
Where each sits in its class
Specialized Tarmac DiscSpecialized Tarmac SL6 Disc
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 DiscS-Works Disc | Specialized Tarmac SL6 DiscDisc |
|---|---|---|
| Frame | Specialized S-Works Tarmac SL6 | Specialized Tarmac SL6 |
| Shifter | not listed | Shimano Tiagra |
| Derailleur | not listed | Shimano Tiagra |
| Chain | not listed | KMC X10 |
| Crankset | not listed | Shimano Tiagra 4700 |
| Wheelset | not listed | Specialized Axis Sport |
| Tire | not listed | Specialized Turbo Pro |
| Saddle | not listed | Specialized Power Sport |
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