Specialized · Road · 2026
Tarmac SL8
Aethos-cosplay race frame. More compliant than SL7, faster geometry, 10r carbon.
$5,500 USD
View on Specialized.comRace geo + 12% bump in vertical compliance vs SL7
Geometry explorer
default size 54 (recommended for ~175 cm)Click any measurement on the right to highlight it on the bike. Numbers from the Specialized Tarmac SL8 geometry chart.
Size 54 · Specialized Tarmac SL8
Frame Reach392 mm
Geometry · size 5419 measurements
Frame Reach | 392 mm |
Frame Stack | 543 mm |
Head Tube Length | 137 mm |
Top Tube (effective) | 547 mm |
Seat Tube Length | 481 mm |
Seat Tube Angle from horizontal | 74.0° |
Head Tube Angle from horizontal | 73.0° |
Chainstay Length | 410 mm |
Wheelbase | 980 mm |
Fork Rake / Offset | 47 mm |
BB Drop BB below axles | 72 mm |
Standover Height | 770 mm |
Stack to Stem | — |
Reach to Stem | — |
Stem Length | — |
Saddle Width | — |
Seatpost Length | — |
Crank Length | — |
Handlebar Width | — |
Click a row to highlight the measurement on the bike. Sourced from the official Specialized Tarmac SL8 geometry chart.
All sizes — 5 total
| Size | Reach (mm) | Stack (mm) | S/R ratio |
|---|---|---|---|
| 49 | 376 | 514 | 1.37 |
| 52 | 386 | 527 | 1.37 |
| 54 | 392 | 543 | 1.39 |
| 56 | 398 | 562 | 1.41 |
| 58 | 408 | 580 | 1.42 |