Revolutionary Evolution

The ONE is not a revolution pulled from thin air; it is the evolution of everything we’ve learned in recent years. From the Olympic-record-breaking HANZŌ Track to the all-conquering OSTRO VAM, each project has added layers of knowledge. We’ve amassed a deep understanding of form and shapes, fusing CFD, wind tunnel, and real world knowledge. How to manipulate turbulence around a spinning wheel, how to extract more speed without sacrificing stability. When the UCI relaxed key design regulations, we were ready. We pushed to the very edge of what is now possible, not only aerodynamically, but in rider fit and handling. In its first public appearance, unannounced, in prototype form, the ONE won a stage of the Critérium du Dauphiné. It was not a debut. It was a declaration.

A Simple Guide to Your Fit

The easiest way to find your size is to match it to your current OSTRO VAM or OSTRO Gravel setup. Here’s how:

• Frame: Choose the same frame size you normally ride.

• Seatpost: Select the ONE Setback seatpost (this replaces the OSTRO Zero Setback post). 

• Stem: Pick the stem number that matches the stem length you use on an OSTRO: 110mm = 1, 120mm = 2, 130mm = 3, 140mm = 4, 150mm = 5. The 20mm longer reach of the ONE is already factored into this calculation.