Riders on used SL6s or comparing a previous Tarmac to SL7/SL8. Check stack/reach — sizes did not stay still. The S-Works kit is the halo build — same geometry as the non-S-Works page for this year, different parts.
The 2018–2020 Tarmac: disc-era race geometry before SL7's aero integration. Still a low, racy fit; cockpit is more conventional than SL7/SL8.
Riders on used SL6s or comparing a previous Tarmac to SL7/SL8. Check stack/reach — sizes did not stay still. The S-Works kit is the halo build — same geometry as the non-S-Works page for this year, different parts.
The 2018–2020 Tarmac: disc-era race geometry before SL7's aero integration. Still a low, racy fit; cockpit is more conventional than SL7/SL8.
| Measurement |  SpecializedS-Works Tarmac SL6 2020 |  SpecializedS-Works Tarmac SL6 2019 |
|---|---|---|
| Stackmm | 565 | 565 |
| Reachmm | 391 | 391 |
| Head tube angle° | 73.5 | 73.5 |
| Seat tube angle° | 73.5 | 73.5 |
| Chainstaymm | 405 | 405 |
| Wheelbasemm | 991 | 991 |
| BB dropmm | 72 | 72 |
| BB heightmm | — | — |
| Standovermm | — | — |
| Part | S-Works Tarmac SL6 56 | S-Works Tarmac SL6 56 |
|---|---|---|
| Stem | 100 mm | 100 mm |
| Bar | 420 mm | 420 mm |
| Crank | 172.5 mm | 172.5 mm |