Bicycle Specialized Tarmac SL8 Pro Shimano Ultegra Di2 - Glossy Black Carbon

€6.248,36 €8.926,23

by Specialized

Type: Road bike

SKU: 94925-1249

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Description
Assembly
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Specialized Tarmac SL8 Pro Shimano Ultegra Di2 – The fastest road racing bike in the world

The Specialized Tarmac SL8 Pro Ultegra Di2 represents the ultimate evolution of the modern racing bike: more aerodynamic, lighter, and more responsive than any previous Tarmac. After eight generations and over twenty years of research, the SL8 sets new performance standards: it is simply the fastest road bike ever developed by Specialized.

Thanks to the perfect combination of advanced aerodynamics, optimized stiffness, reduced weight, and superior ride quality, the Tarmac SL8 is designed to deliver real speed on any course:

16.6 seconds faster over 40 km on flat terrain
128 seconds gained on the Milano–Sanremo route
20 seconds faster on the Tourmalet climb

If you're looking for a race bike that turns every watt into pure speed, the Tarmac SL8 is ready to take you beyond your limits.

Aerodynamics – The most advanced ever seen on a Tarmac

Specialized focused aerodynamics only where it really matters, achieving the most aerodynamic road bike in its history — even faster than the legendary Venge.

New optimized front area to drastically reduce air resistance.
Fork steerer tube set back relative to the head tube for cleaner airflow.
Narrower and more aerodynamic seatpost ever produced by Specialized, made possible by new UCI regulations.

Result: the turbulent air produced by leg movements flows away more efficiently, ensuring better aerodynamic penetration.

Lightness – Frame weighing only 685 grams

To create such a light and aerodynamic frame, Specialized applied technologies developed with the Aethos project.

15% lighter than the Tarmac SL7
Lighter than any World Tour bike (except the 585 g Aethos used by Asgreen in a Tour stage)

The FACT 10r frame responds so efficiently to stresses that it allows a reduction in thicknesses, eliminating all unnecessary material.

Ride quality – Stiffness, agility, and comfort at the highest levels

The Tarmac SL8 features a stiffness-to-weight ratio 33% higher than the SL7, with:

Greater precision and responsiveness in technical situations
Direct and instantaneous power transfer
Increased comfort of 6% thanks to the ability to filter vibrations

It retains the proven SL7 geometry, with space for tires up to 32 mm, perfect for those seeking speed and versatility.

Total inclusivity – Beyond any gender difference

Specialized designs based on the real needs of cyclists, not gender.
Men and women can enjoy the same advantages of the Tarmac SL8: a race bike perfectly balanced for every body type.

Pro Build – Race Ready

The Tarmac SL8 Pro is equipped with:

Shimano Ultegra 8100 Di2 group with powermeter
Roval Rapide CL II tubeless ready wheels
Integrated Roval Rapide cockpit

A race-ready setup immediately ready to ride.

Technical Specifications

Frame

Tarmac SL8 FACT 10r carbon, Rider First Engineered™, Win Tunnel Engineered
Clean Routing
Threaded bottom bracket
12x142mm thru-axle
Flat-mount disc brakes

Suspensions

Fork: FACT 10r carbon, 12x100mm thru-axle, flat-mount disc brakes

Brakes

Front: Shimano Ultegra Di2 R8170, hydraulic disc
Rear: Shimano Ultegra Di2 R8170, hydraulic disc

Drivetrain

Shifters: Shimano Ultegra Di2 R8170
Front derailleur: Shimano Ultegra Di2 R8150, braze-on
Rear derailleur: Shimano Ultegra Di2 R8150, 12 speed
Cassette: Shimano Ultegra 12v, 11-30T
Chain: Shimano Ultegra 12v
Crankset: Shimano Ultegra R8100 with 4iiii powermeter
Gears: 52/36T
Bottom bracket: Shimano BSA threaded

Wheels and Tires

Front wheel: Roval Rapide CL II, carbon, 21 mm internal width, tubeless ready
DT hub for Roval 350, DT Swiss Revolution spokes, 51 mm depth
Rear wheel: Roval Rapide CL II, carbon, 21 mm internal width, tubeless ready
DT hub for Roval 350, DT Swiss Revolution spokes, 60 mm depth
Front tire: S-Works Turbo 2BR, 700x26mm
Rear tire: S-Works Turbo 2BR, 700x26mm
Inner tubes: Turbo Ultralight (60 mm front, 80 mm rear), Presta valve

Cockpit

Handlebar tape: Supacaz Super Sticky Kush
Handlebar stem: Integrated Tarmac, 6°
Seatpost: S-Works Tarmac SL8 Carbon, 15 mm offset
Seatpost collar: Integrated Tarmac
Handlebar: Roval Rapide Cockpit, integrated
Saddle: Power Pro with Mirror technology

Accessories

Pedals: Provided by Specialized (test)
Handlebar setup: Stem Headset Spacers Kit compatible with SL7 stem and Roval Rapide cockpit

Weight

Weight: 7.16 kg (15 lb 12.6 oz)
Measured size: 56 cm

Note Well

Technical specifications may change without notice depending on component availability.
Product images are purely indicative and may not exactly reflect the described features.

The Tarmac SL8 Pro is the ultimate choice for those who demand the highest in speed, precision, and race performance.

Do you want to receive your bike ready for use? Don't forget to add the bike assembly service at the time of purchase! Discover all the details here: Francesconi bike assembly

A Complete Guide to Bike Sizes

Foreword: Not all bike sizes are the same

Each type of bike has a specific frame and often uses a different size scale. For example, a road bike with a 54cm frame might be considered a medium size by one brand, but a large by another.

Bicycle adjustment margins

Some types of bikes, like gravel bikes, offer a wide range of adjustments, adapting to different body types. Other models, however, have limitations in this regard. This is an important aspect to consider.

How to use size charts

We've created a simple guide to help you find the right bike size:

Check out our size charts for each bike type.
Learn more with specific tips to help you make the right choice.

Size Charts: Find Your Perfect Bike

Gravel and road bikes

Sizes are based on the length of the top tube (in cm), which determines the reach of the bike.

Cut	Recommended height	Horizontal tube length
XS	Up to 157 cm	48-50 cm
S	157-167 cm	50-53 cm
M	168-178 cm	53-56 cm
THE	178-185 cm	56-58 cm
XL	Over 185cm	58-62 cm

For gravel, measurements may vary slightly due to different geometries, but remain similar.

Mountain bike

MTBs are measured in inches, based on the seat tube.

Cut	Recommended height	Size (in inches)
XS	Up to 157 cm	14"-16"
S	157-167 cm	15"-17"
M	168-178 cm	16"-19"
THE	178-185 cm	18"-20"
XL	Over 185cm	20"-23"

Sizes also vary depending on the type of MTB: full-suspension , hardtail or fat bike .

Children's bikes

The size depends on the size of the wheels, often associated with age:

Age	Wheel Size
1-3 years	12"
2-4 years	14"
4-6 years	16"
5-8 years	20"
8-10 years	24"
Over 10 years	26"/27.5"

What to do with half measures?

If you are between two sizes:

Comfort : Choose the larger size.
Performance : Go for the smaller size.

Final tips for choosing

Consult the manufacturer's instructions : Always check the brand's guidelines.
Ask an expert : a specialized workshop can help you choose based on your height, ideal reach and goals.
Test the bike : If possible, test the model you intend to purchase.