Cervélo S5 Ultegra Di2 Bike – High-End Aero Road Bike
The Cervélo S5 Ultegra Di2 bike is one of the most advanced aero road bikes in the world, designed to dominate on the road with exceptional aerodynamic performance and surprising lightness. It represents the pinnacle of modern cycling engineering, the result of Cervélo’s expertise at the highest levels of professional cycling.
From Wout van Aert’s victories and winning the Green Jersey, to the Pink Jersey worn by Simon Yates, the Cervélo S5 has proven its worth on the most prestigious international stages.
Optimized Aero Performance
The new Cervélo S5 is over 6 Watts faster than the previous version, with a weight saving of 124 grams. Aerodynamics have been especially improved in the front area, with a more pronounced fork and steerer tube. The new one-piece integrated HB19 handlebar with V-shaped design optimizes airflow and riding position.
Thanks to the “Plus-Four” concept, the top part of the handlebar is 4 cm narrower than the lower part, promoting a more aerodynamic posture on the tops and stability during sprints and descents. All fully compliant with UCI regulations.
Reserve 57 Wheels|64 – Turbulent Aerodynamics
Jointly developed by Cervélo and Reserve, the new Reserve 57|64 Turbulent Aero wheels are perfectly integrated into the S5 frame design. The rear asymmetry fits the seat tube, creating a clean and stable airflow, even in crosswinds. This set is 3 Watts faster than the previous 52|63, while maintaining the same weight.
Technical Specifications
Technical Specifications
Fork: Cervélo All-Carbon, Bayonet S5 Fork
Integrated handlebar: Cervélo HB19 Carbon
Handlebar Width
Size 48 – 36 cm
Size 51 – 38 cm
Size 54 – 40 cm
Size 56 – 40 cm
Size 58 – 40 cm
Size 61 – 40 cm
Stem Length
Size 48 – 80 mm
Size 51 – 90 mm
Size 54 – 100 mm
Size 56 – 100 mm
Size 58 – 110 mm
Size 61 – 120 mm
Seatpost: Cervélo SP34 Carbon
Seatpost offset
Size 48 – 0 mm
Size 51 – 0 mm
Size 54 – 0 mm
Size 56 – 0 mm
Size 58 – 15 mm
Size 61 – 15 mm
Saddle: Selle Italia Novus Boost Evo Superflow Carbon
Bottom bracket: CeramicSpeed SL, BBright for 24 mm axle
Headset: FSA SL IS2 1-1/8" (36° x 45°) / 1-3/8" (36° x 45°)
Front thru axle: Cervélo Aero Thru Axle Front, M12x1.5 mm, length 122 mm
Rear thru axle: Cervélo Aero Thru Axle Rear, M12x1.0 mm, length 169 mm
Front wheel: Reserve 57TA, DT Swiss 180, 12x100 mm, 24H, Centerlock, tubeless ready
Rear wheel: Reserve 64TA, DT Swiss 180, 12x142 mm, HG body 24H, Centerlock, tubeless ready
Tires: Vittoria Corsa Pro TLR G2.0 700x29c
Brake levers: Shimano Dura-Ace R9270
Crankset: Shimano Dura-Ace R9200, 54/40T
Power Meter: 4iiii Precision Pro GEN3+ Dual Sided
Crank arm length
Size 48 – 165 mm
Size 51 – 165 mm
Size 54 – 170 mm
Size 56 – 170 mm
Size 58 – 172.5 mm
Size 61 – 172.5 mm
Chain: Shimano M9100
Cassette: Shimano Dura-Ace R9200, 11-34T, 12-speed
Front derailleur: Shimano Dura-Ace R9250
Rear derailleur: Shimano Dura-Ace R9250
Brake rotors: Shimano CL900 Centerlock
Included accessories:
Maximum tire width (actual): 34 mm
Note
Technical specifications may change without notice depending on component availability.
Product images are for illustrative purposes only and may not perfectly reflect the described features.
The Cervélo S5 Dura-Ace Di2 is the ultimate choice for those who want the maximum in speed, technology, and uncompromising 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.