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

Specialized Tarmac SL9

Limited supply. More colours/sizes arriving August - November. Pre-order with 20% deposit before 31/07/26 and get a free S-Works Evade 4 road helmet! Contact our store for details.

Free S-Works Evadeb 4 helmet with every pre-order before 31/07/26

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.

The Result? The Tarmac SL9 would have made Demi Vollering 14 seconds faster during that decisive last stage in the Tour de France Femmes in 2024. A 14-second gain on a Tour decided by 4 seconds. The difference between losing the overall… or winning it by 10 seconds.

Still skeptical? Read the Whitepaper here.

Aero Where it Matters: 4 Watts Faster
Tarmac SL9 rewrites the aerodynamics of the entire front half of the bike with a thinner Speed Sniffer, a dropped downtube, and the new Flow Fork, which work together to manage high‑pressure airflow more efficiently. At the rear, the Win Fin reshapes the seat tube and triangle around real race conditions, delivering meaningful aerodynamic gains when it matters most. A re‑engineered Aero Post further reduces drag in the zone most affected by pedaling airflow, completing a system designed for maximum speed in real‑world racing.

Nothing is Lighter: Flow State Design Delivers 687 Gram Frame
At 687 grams, the S-Works Tarmac SL9 frame stands alone at the top of the road aero category. Complete builds start at 6.5 kg—a number most climbing-specific road bikes and the UCI can only dream of. Oh, and yes, that includes Roval Rapide CLX III wheels and Roval Rapide Cockpit. This was made possible by Flow State Design, first pioneered on the Aethos road bike.

  • 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.

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Note: Some products on this page may not be available in-store due to space restrictions, however are available for immediate online order.