Specialized Tarmac SL8 Comp SRAM Rival AXS Bicycle – The Fastest Road Bike in the World
Discover the Specialized Tarmac SL8 Comp with SRAM Rival AXS groupset, a racing bike that redefines the limits of aerodynamics, lightness, and ride quality. After eight generations and over twenty years of development, Specialized has created the fastest bike on the planet. The Tarmac SL8 is not just an evolution: it is a revolution in road performance.
Why choose the Tarmac SL8 Comp SRAM Rival AXS?
Advanced aerodynamics: designed to be faster than the Venge thanks to targeted optimization in the front part of the frame and an aerodynamic seatpost never seen before.
Reduced weight: FACT 10r carbon frame weighing only 685g – 15% lighter than the Tarmac SL7.
Comfort and precision: improved stiffness-to-weight ratio (+33%) for immediate response and smooth riding even on the most technical routes.
Wireless technology: equipped with the electronic groupset SRAM Rival AXS for fast and precise shifting and powerful, modulable braking.
High-level components: wheels DT Swiss R470, Specialized alloy handlebar and Body Geometry Power Sport saddle.
Technical Specifications – Specialized Tarmac SL8 Comp SRAM Rival AXS
Frame
Material: FACT 10r Carbon
Technologies: Rider First Engineered™, Win Tunnel Engineered
Features: Clean Routing, threaded BB, 12x142mm thru-axle, flat-mount disc brakes
Fork
Groupset – SRAM Rival AXS
Shifters: SRAM Rival AXS E1 HRD wireless
Front derailleur: SRAM Rival AXS E1
Rear derailleur: SRAM Rival AXS E1
Cassette: SRAM XG-1250 12v, 10-36t
Chain: SRAM Rival E1
Crankset: SRAM Rival E1 48/35t
Bottom Bracket: SRAM DUB BSA
Brakes
Wheels & Tires
Wheels: DT Swiss R470, 20mm, tubeless ready, sealed bearing hubs, 24 spokes, Centerlock
Tires: S-Works Turbo, 700x26mm, 120 TPI, BlackBelt protection
Inner tubes: Turbo Ultralight, Presta valve 48mm
Cockpit
Stem: Integrated Tarmac, 6° angle
Handlebar: Specialized Shallow Drop, 6061 alloy, 70x125mm
Handlebar tape: Supacaz Super Sticky Kush
Seatpost: OC031-1, 15mm offset
Saddle: Body Geometry Power Sport, steel rails
Seat collar: Integrated Tarmac
Accessories
Product Details
Note Well
Technical specifications may change without notice depending on component availability.
The product images are purely indicative and may not exactly reflect the described features.
The Specialized Tarmac SL8 Comp SRAM Rival AXS is the ideal choice for those seeking the utmost in performance, innovation, and reliability on every type of route.
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.
