Everything about our A 1800 SPLINE 30 is designed to make the discovery of a new world of speed accessible and enjoyable. Based on our first aero-optimized alloy rim, it marks the democratization of our Aero category. In addition to the rim, hidden nipples and aero spokes enhance the aero advantage. So what are you waiting for Get them on your bike and chase those local KOMs with speed and the wind as your ally.