Specialized S-Works Tarmac SL8 Shimano Ultegra Di2 bike

The fastest racing bike in the world. Even faster.

The Specialized S-Works Tarmac SL8 Shimano Ultegra Di2 bike represents the pinnacle of road cycling innovation. After eight generations and over 20 years of development, the Tarmac SL8 combines advanced aerodynamics, ultra-lightweight, and a revolutionary ride quality. The result? The fastest racing bike ever built.

Now available with the brand-new Shimano Ultegra Di2 groupset, one of the lightest and most advanced electronic groupsets on the market, and equipped with Roval Rapide CL III tubeless ready wheels paired with the integrated Roval Rapide cockpit for unprecedented aerodynamic efficiency.

Strengths of the Tarmac SL8 Shimano Ultegra Di2

Aerodynamics where it really counts

The design of the Tarmac SL8 is the result of advanced wind tunnel studies:

• New "Speed Sniffer" design: sharper head tube for reduced frontal resistance.

• Most aerodynamic seatpost ever made by Specialized, compliant with the new UCI regulations.

• Better airflow of the turbulent air generated by the cyclist’s legs.

Minimum weight, maximum speed

Thanks to the experience gained with the Aethos, the FACT 12r carbon frame weighs only 685 grams, resulting in:

• 15% lighter than the Tarmac SL7.

• Lighter than any other World Tour race frame*.
  (*Except for the 585 g Aethos used by Kasper Asgreen in a Tour stage.)

Top-level comfort and responsiveness

• +33% stiffness compared to the SL7 model for an even more immediate response.

• +6% vibration absorption, for a smooth ride even on rough asphalt.

• Proven geometry of the Tarmac and space for tires up to 32 mm: versatility and comfort in every condition.

A bike beyond gender labels

Specialized designs for the cyclist, not the gender. The S-Works Tarmac SL8 is built to deliver top performance to all riders, regardless of gender or size.

Components 

Shimano Ultegra Di2 drivetrain group

• Shifters: Shimano Ultegra Di2, hydraulic disc

• Front derailleur: Shimano Ultegra Di2

• Rear derailleur: SShimano Ultegra Di2

• Cassette: Shimano Ultegra Di2, 12-speed, 11-34t

• Chain: SShimano Ultegra Di2

• Crankset: SShimano Ultegra Di2, 52/36t

• Bottom bracket: SShimano Ultegra BSA

Braking system

• Front and rear brakes: Shimano Ultegra Di2, hydraulic disc brake

Frame and fork

• Frame: S-Works Tarmac SL8 FACT 12r Carbon, Rider-First Engineered™, Win Tunnel Engineered, internal cable routing, threaded bottom bracket, 12x142 mm thru-axle, flat mount

• Fork: S-Works FACT 12r Carbon, 12x100 mm, flat-mount disc

Wheels and tires

• Front wheels: Roval Rapide CL II, Tubeless Ready, 21 mm internal width, 51 mm depth, DT350 hub

• Rear wheels: Roval Rapide CL II, Tubeless Ready, 21 mm internal width, 48.5 mm depth, DT350 hub 

• Tires: TLR Sworks 700x28 (front and rear)

• Inner tubes: Standard 80 mm PV

Cockpit and saddle

• Handlebar and stem: Roval Rapide Cockpit, integrated

• Handlebar tape: Supacaz Super Sticky Kush

• Saddle: S-Works Power 

• Seatpost: S-Works Tarmac SL8 Carbon, FACT Carbon, 15 mm offset

• Seatpost collar: Tarmac integrated wedge

Note

Technical specifications such as handlebar size, gear ratios, and crank arm length can all be customized upon request based on availability.
Product images are for illustrative purposes only and may not exactly reflect the described features.