Specialized Roubaix SL8 Expert – Comfort and speed without compromise
The Specialized Roubaix SL8 Expert revolutionizes the endurance road bike concept. Thanks to the Future Shock 3.0, this bike is lighter, faster, and more comfortable than any other in its category. Even on the roughest roads, the new Roubaix offers a stable and precise ride, turning every route into a smooth and safe experience.
Vibration absorption – Future Shock 3.0
The Future Shock 3.0 cartridge guarantees:
20 mm of frictionless travel, regardless of saddle position
Hand stability on the handlebars for a safer and more controlled ride
The design with lowered clamp increases seatpost flex, while the Pavé seatpost manages vertical movement for optimal vibration absorption. The combination of the two technologies forms the innovative AfterShock system, which, combined with the stiff rear triangle, offers a smooth ride without losing efficiency.
According to the Specialized Ride Science Team, the Roubaix SL8 is the most comfortable bike ever tested, reducing impacts on the handlebars of the 53% compared to other endurance bikes.
Ergonomics and handling capability
The endurance geometry allows you to feel “in” the bike, not “on” the bike, with numerous advantages:
Reduced pressure on hands, shoulders, and arms
Greater control and safety on any surface
Tire clearance up to 38c/40mm, ideal for rough roads and gravel without sacrificing speed and smoothness
The Roubaix SL8 Expert is equipped with:
Performance – aerodynamics and lightness
The new Roubaix SL8 is the most aerodynamic endurance bike in its category:
Inspired by the Aethos project, the bike features a FACT 12r frame weighing 825 grams, 50 g lighter than the previous model. No endurance bike today offers similar performance in terms of lightness and speed.
Technical Specifications
Frame
Suspensions
Brakes
Front: SRAM Rival, hydraulic disc
Rear: SRAM Rival eTAP AXS, hydraulic disc
Drivetrain
Shift levers: SRAM Rival eTAP AXS, 12-speed
Front derailleur: SRAM Rival eTAP AXS, 12-speed
Rear derailleur: SRAM Rival eTAP AXS, 12-speed
Cassette: SRAM XG 1250, 10–36T
Chain: SRAM Rival, 12-speed
Crankset: SRAM Rival AXS with Power, 12-speed
Gears: 46/33T
Bottom bracket: SRAM DUB BSA
Wheels & Tires
Front wheel: Roval Terra C, 25 mm internal carbon rim, 32 mm depth, DT 370 hub, 24 DT Swiss Comp Race spokes
Rear wheel: Roval Terra C, 25 mm internal carbon rim, 32 mm depth, DT 370 Star Ratchet hub, 24 DT Swiss Comp Race spokes
Tires: S-Works Mondo 2BR, 700x32c (front and rear)
Inner tubes: 700x28/38 mm, Presta valve 48 mm
Cockpit
Handlebar curve: Specialized Hover Expert, aluminum, 125 mm drop, 75 mm reach, Di2 hole
Stem: Future Stem Pro
Saddle: Body Geometry Power Expert
Seatpost: S-Works Pavé
Seatpost collar: Hidden clamp
Handlebar tape: Supacaz Super Sticky Kush
Weight
8.62 kg (19 lb, 0.1 oz)
Weighed measurement: 56
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 Specialized Roubaix SL8 Expert is the ultimate endurance bike: it combines lightness, comfort, and aerodynamic performance, ideal for those who want to tackle any road with speed and control without giving up the joy of cycling.
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.