With a 47mm rim height for an aerodynamic feel and wind-slicing speed, we appreciate the HEC 1400 Spline 47 Disc Wheel as a wheel that can take us further, faster on our endurance e-bike. It's designed to provide a stylish performance upgrade that lets us enjoy our ride every time. The Aero+ concept developed with SwissSide guarantees maximum speed and superb handling, and a SPLINE hub with Ratchet System technology improves responsiveness.