Collection: 2027 Specialized S-Works Tarmac SL9 - One bike to rule them all

Pre-order available! Contact our store for details.

The all-new 2027 S-Works Tarmac SL9 is the fastest road bike ever made. Not just because it’s the lightest. Not just because it’s Specialized's most aero. Not because it handles better than anything else on the road. But because it delivers the lowest real-world Time to Finish of any road bike ever made. Tarmac SL9 turns more of your effort into pure speed - scientifically validated across real race courses, real terrain, real riders. When the goal is to cross the line first, no road bike gets you there faster.

Time to Finish
Specialized have distilled the new SL9's performance metrics to one encompassing parameter - Time To Finish - a physics-based simulation output that predicts total elapsed race time over a specific real-world course, using measured inputs from aerodynamics, weight, rolling resistance, surface roughness, environmental conditions, and rider power. It is not theoretical. It is the result of measured data applied to real courses. In simpler terms, Rider + Bike + Route = Time To Finish.

In practice, the equation integrates rider power and mass, bike mass, the aerodynamic drag of the rider and bike as one system, rolling resistance, drivetrain efficiency, terrain and slope distribution, and wind speed and direction. The output is singular and unambiguous: total elapsed time over a real course.

Still skeptical? Read the Whitepaper here.

Rider
- Power
- Rider Mass
- Rider CdA
Bike
- Mechanical Efficiency
- Rolling Resistance
- System Mass
- System CdA
Route
- Gravity Acceleration
- Ground Speed
- Air Density
- Wind Speed
- Wind Angle
- Surface Roughness
The most accurate bike testing system ever made
Specialized's sixth gen Win Tunnel Moving Leg Mannequin is the most precise, repeatable, and realistic way to test a bike and rider, period. Integrating true pedaling motion into Win Tunnel testing and pairing it with pedaling CFD models reveals which gains remained meaningful under race‑real conditions and which did not.
Results based on real-world scenarios
The Time To Finish methodology is apploed across a wide range of real‑world race scenarios, using full course profiles from the world’s most decisive events. Each simulation compares Tarmac SL9 against key competitors, tested in our Specialized's wind tunnel in the same specifications raced by professional athletes. The goal is not to chase isolated watt numbers, but to understand how small gains compound across breakaways, climbs, and hours spent in the bunch to deliver the lowest real‑world Time To Finish where races are actually decided.
Aerodynamic gains without a weight penalty
At 687 grams for the S‑Works frame, SL9 sits at the top of the aero race category while enabling complete builds as low as 6.5 kilograms. This is made possible by Flow State Design, in which shape carries the load and carbon ply placement is guided by measured deformation patterns. Structural efficiency allows material to be removed without sacrificing stiffness or ride quality. SL9 matches the compliance and stiffness targets of Tarmac SL8 while delivering measurable aerodynamic improvements.