Aggressive fitSlow steeringFast steeringRelaxed fit
Weight—
Climbing7.2
Aero6.7
Comfort2.8
Specialized S-Works Tarmac SL8 2025 Sizing Guide
What it's like to ride
The current Specialized race bike: lighter than SL7, still aero, and famously 'it just disappears' if the fit is right. Size by stack/reach — the 54/56 split is where a lot of riders hop.
Who it's for
Racers and fast club riders who want the modern Tarmac. If you came off an SL7, check that the stack/reach still matches your size. The S-Works kit is the halo build — same geometry as the non-S-Works page for this year, different parts.
Adds Satin Silver Dust / Dove Grey / Black Pearl. Drops Satin Fog Tint / Green Ghost Pearl / Red Ghost Pearl Fade.
Satin Silver Dust / Dove Grey / Black Pearl · satin · new
Satin Fog Tint / Green Ghost Pearl / Red Ghost Pearl Fade · satin · dropped
New: Satin Silver Dust / Dove Grey / Black Pearl · satin.
Gone: Satin Fog Tint / Green Ghost Pearl / Red Ghost Pearl Fade.
What changed in the bike frame
Same published geometry as 2024.
Published geometry matches the 2024 Specialized S-Works Tarmac SL8. Same sizes, same stack and reach.
What changed in equipment
No verified spec sheet for 2025 or 2024.
That spec retails for £8,250 and is said to weigh 7.16kg in a size 56. You can read Sam's full review here. The Specialized Tarmac SL8 will be at the ...
