AR 1600 SPLINE® Be aerodynamic, ride like a pro. Once you’ve experienced the thrill of speed that aerodynamic optimisation brings, it’s hard to do without it. That exhilarating moment is exactly what the AR 1600 SPLINE 30 offers you, thanks to the same expertise that lies behind our top-of-the-range Aero carbon wheels used by professionals. The use of aero spokes and concealed nuts provides an additional aerodynamic advantage. To help you during acceleration, the 350 hub features the Ratchet freewheel system, which efficiently transfers the power from every pedal stroke.