Colnago Y1RS Shimano Dura Ace Di2 + Enve WS Ses 4.5 bike 2025
Please note: The bikes are assembled according to the manufacturer's specifications with default features according to size. For any assembly requests or specifications other than the basic ones, please contact our costumer service directly before purchase.
Racing against the wind
Designed to defy the wind, the Colnago Y1Rs is the ultimate expression of aerodynamic efficiency. This bike is built to deliver optimal performance in the fastest races, combining advanced technologies and innovative design for sprinters and breakaway specialists. With a design that drastically reduces air resistance, stiffness optimized for the most powerful sprints, and surprising comfort for long distances, the Y1Rs offers the perfect balance of performance, efficiency, and control.
Cutting-Edge Aerodynamics
The Y1Rs reduces its frontal area by 19% compared to the V4Rs, thanks to innovations like the CC.Y1 handlebars with WYND© technology and the curved downtube. These elements reduce drag and optimize airflow in all wind conditions.
Stiff Where It Matters
The frame structure is designed to provide 3.5% greater stiffness than the previous model. This ensures immediate power transfer during the most intense sprints and unparalleled responsiveness.
CC.Y1 Handlebars with WYND© Technology
The handlebars feature a "gull-wing" design that minimizes airflow separation and improves stability at high speeds. All this without compromising stiffness, making it ideal for the most powerful riders.
DEFY Seatpost Joint
The dual Y-shaped joint improves aerodynamics in the seatpost area and enhances vibration absorption, increasing comfort without sacrificing stiffness. Perfect for long breakaways and endurance stages.
Wind Tunnel-Verified Results
Tests conducted in real-world configurations show that the Y1Rs requires 20 fewer watts than the V4Rs to maintain a speed of 50 km/h. A significant advantage in fast races and windy conditions.
Modern Compatibility and Integrated Design
The Y1Rs is compatible with the most advanced electronic groupsets and offers a fully integrated design, from custom bottle cages to the aerodynamic seatpost. Every detail has been optimized to reduce weight and enhance aesthetics.
Tech spec
Frame kit
- Frame: Colnago Y1Rs carbon frame
- Fork: Bayonet fork for disc brakes, integrated cables
- Headset: ID:35 OD:47 36°/45° CeramicSpeed SLT Treated Bearings
- Seatpost: Carbon seatpost, 0 or 15 offset mm,
- Through axles: Diameter: 12 mm. length 100 mm (front) - 142 mm (rear)
Drivetrain
- Shifting system: Shimano Dura Ace R9270 Di2 Disc - 12v
- Front derailleur: Shimano Dura Ace FD-R9250
- Rear derailleur: Shimano Shadow RD-R9250 12v
- Chain: Shimano CN-M9100 12V
- Chainrings: Option 1 (Default): 52-36T / Option 2: 50-34T
- Cassette: Option 1 (Default): 11-30T / Option 2: 11-34T
- Bottom bracket: T47 Shimano with Steel Bearings
- Crank length: 170 mm, 172.5 mm, 175 mm
Brakes
- Brakes: Shimano Dura Ace R9270, 160 mm Front / 140 mm Rear, RT-CL900 rotors
- Disc size: 160 mm Front/ 140 mm Rear - RT-CL900 rotors
- Brake lever: Shimano DURA-ACE ST-R9270
- Brake caliper: Standard Flat Mount
Wheels
- Wheels: Enve WS SES 4.5 C
- Material: Carbon
- Rim height: Front: 51 mm - Rear: 56 mm
- Internal channel width: 25 mm
- Hubs: ENVE INNERDRIVE™ Premium Straight-Pull
- Front: HH12-100 - Rear: HH12-142
- Tyres: Pirelli PZero Race TLR 700x28
- Maximum tyre size: 32 mm (nominal width)
Components
- Saddle: Scratch M5 Nack 140 Hard Black / Selle Italia SLR Boost Superflow Carbon Rail
- Handlebar: Colnago CC.Y1 integrated Cockpit - regular geometry.
- Stem: CCY1 integrated cockpit
- Handlebar Tape: Colnago Grip Black or Colnago WT23 (for WT24 color scheme only)
- Bottle cage: Colnago x Elite Bottle - custom bottle cages for Y1Rs (2x)
- Other accessories: Computer mount (multiple sizes)
Technology
Blockchain Technology
Register your Colnago Y1Rs on the Colnago Blockchain. You'll enjoy all the legal benefits of having ownership of your bike registered on a secure system accessible to the authorities. In addition to this you will be able to prove the authenticity of the frame at any time, resell your Colnago more easily on the secondary market, certify maintenance work carried out, report its theft making it unsaleable on the secondary market.
Finally you will get an extension of the warranty for a further year on top of the legal two-year warranty already provided with the bike.
Producer's notes: depending on component availability, specifications are subject to change without notice. Images are for illustration purposes only. Anything not specified in the description is not included.
For more information on technical specifications click here