Once you have experienced the speedy sensation of aero optimization, you'll never get enough. The AR 1600 SPLINE 30 gives you that exact thrill, thanks to the same know-how that went into the development of our high-end carbon Aero wheels ridden by the pros. The aerodynamic advantage is further enhanced by the addition of aero spokes and hidden nipples. The 350 hub with its Ratchet System efficiently transmits the power of each pedal stroke to help you in the acceleration phase.