Specialized S-Works Tarmac SL8
The fastest road bike in the world? Start here.
The new Specialized S-Works Tarmac SL8 redefines the concept of road speed. After eight generations and over 20 years of innovation, this frame represents the ultimate expression of cycling performance, combining aerodynamics, lightness, and comfort like never before. Whether you're aiming for race victory or your personal best, the Tarmac SL8 is the frame to start with.
Why choose the Tarmac SL8 S-Works frame
Aerodynamics wherever it matters
The shape of the Tarmac SL8 is designed to cut through the air at the most strategic points. The new "Speed Sniffer" – an aerodynamic nose that extends beyond the head tube – takes advantage of the new UCI regulations to achieve the maximum aerodynamic penetration, even surpassing the Venge. The most aerodynamic seatpost ever produced by Specialized allows turbulent air to flow better around the cyclist's legs.
Minimum weight, maximum speed
Weighing only 685 grams, the S-Works Tarmac SL8 frame is 15% lighter than the SL7 and among the lightest in the World Tour. The design is inspired by the Aethos and optimizes structural load to eliminate unnecessary carbon layers, ensuring exceptional stiffness and lightness without compromise.
Race responsiveness, long-distance comfort
The 33% improved stiffness compared to the previous model offers an immediate pedal response, unmatched cornering precision, and 6% increased comfort in the saddle. Thanks to Rider-First Engineering technology, every size ensures the same riding qualities and handling. The proven geometry and space for tires up to 32mm complete the package.
Beyond gender
The Tarmac SL8 is not designed for men or women, but for real people. Differences between cyclists are unique and personal, which is why this platform is designed to fit everyone, surpassing outdated gender-based distinctions.
Technical Specifications
Frame
Model: S-Works Tarmac SL8
Material: FACT 12r Carbon
Technologies: Rider-First Engineered™, Win Tunnel Engineered
Routing: Clean Routing (internal cable routing)
Bottom Bracket: Threaded BB (68mm threaded)
Brake compatibility: Flat-mount disc
Rear axle: 12x142 mm thru-axle
Fork
Model: S-Works FACT 12r Carbon
Front axle: 12x100 mm thru-axle
Brake compatibility: Flat-mount disc
Cockpit
Seatpost: S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15 mm offset
Seat collar: Tarmac integrated wedge
Included accessories
Additional data
Note Well
Technical specifications may change without notice depending on component availability.
Product images are for illustrative purposes only and may not exactly reflect the described features.
Build the bike of your dreams
With the Specialized S-Works Tarmac SL8 frame, you have the perfect base to build a custom road bike, with World Tour performance. Advanced aerodynamics, unbeatable lightness, and superior ride quality: all in one frame.
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.