Colnago ditches the traditional diamond frame for its radical new Y1Rs – ‘the most aerodynamic UCI-compliant road bike in the World Tour’

Colnago has launched the Y1Rs, a dedicated aero race bike.

Designed for professionals and top amateurs it will be raced by Team UAE during the 2025 season and is, Colnago says, the culmination of years of effort. The result is a bike that features innovative tube shapes, aggressive geometry, its own integrated aero cockpit and, most strikingly, no main triangle. That’s right, Colnago has ditched the main triangle, replacing it with an irregular pentagon.

Without an aero bike in its lineup, the Italian brand began work on the Y1Rs in part at the behest of the UAE Team who requested an alternative to the VR4s for flatter stages, but also because of the changes to UCI regulations regarding frame design.